# Israel: Possible Military Strike Against Iran’s Nuclear Facilities

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URL: https://www.frixlaw.com/law-library/documents/crs%3AR42443

## Record

- **Collection:** Congressional research report
- **Document type:** CRS Report
- **Published:** September 28, 2012
- **Citation:** R42443

## Text

Israel: Possible Military Strike Against Iran’s
Nuclear Facilities
-name redacted-, Coordinator
Specialist in Middle Eastern Affairs
-name redactedSpecialist in Middle Eastern Affairs
-name redactedSpecialist in Military Aviation
-name redactedSpecialist in Missile Defense
September 28, 2012

Congressional Research Service
7-....
www.crs.gov
R42443

CRS Report for Congress
Prepared for Members and Committees of Congress

Israel: Possible Military Strike Against Iran’s Nuclear Facilities

Summary
Several published reports indicate that top Israeli decisionmakers are seriously considering
whether to order a military strike on Iran’s nuclear facilities, and if so, when. Twice in Israel’s
history, it has conducted air strikes aimed at halting or delaying what Israeli policymakers
believed to be efforts to acquire nuclear weapons by a Middle Eastern state—destroying Iraq’s
Osirak reactor in 1981 and a facility the Israelis identified as a reactor under construction in Syria
in 2007. Today, Israeli officials generally view the prospect of a nuclear-armed Iran as an
unacceptable threat to Israeli security—with some describing it as an existential threat. This
report analyzes key factors that may influence Israeli political decisions relating to a possible
strike on Iranian nuclear facilities. These include, but are not limited to, the views of and
relationships among Israeli leaders; the views of the Israeli public; U.S., regional, and
international stances and responses as perceived and anticipated by Israel; Israeli estimates of the
potential effectiveness and risks of a possible strike; and responses Israeli leaders anticipate from
Iran and Iranian-allied actors—including Hezbollah and Hamas—regionally and internationally.
For Congress, the potential impact—short- and long-term—of an Israeli decision regarding Iran
and its implementation is a critical issue of concern. By all accounts, such an attack could have
considerable regional and global security, political, and economic repercussions, not least for the
United States, Israel, and their bilateral relationship. It is unclear what the ultimate effect of a
strike would be on the likelihood of Iran acquiring nuclear weapons. The current Israeli
government, President Barack Obama, and many Members of Congress have similar concerns
about Iran’s nuclear program. They appear to have a range of views on how best to address those
shared concerns. Iran maintains that its nuclear program is solely for peaceful, civilian energy and
research purposes, and U.S. intelligence assessments say that Iran has not made a decision to
build nuclear weapons. However, Iran continues to enrich uranium in militarily hardened sites
and questions remain about its nuclear weapons capabilities and intentions.
Short- and long-term questions for Members of Congress to consider regarding a possible Israeli
decision to strike Iranian nuclear facilities militarily might include, but are not limited to, the
following:
•

How might an Israeli strike affect options and debate regarding short-term and
long-term U.S. relations and security cooperation with, and foreign assistance to,
Israel and other regional countries?

•

Would an Israeli strike be considered self-defense? Why or why not? What would
be the legal and policy implications either way?

•

How might a strike affect the implementation of existing sanctions legislation on
Iran or options and debate over new legislation on the subject?

•

How might Congress consult with the Obama Administration on and provide
oversight with respect to various political and military options?

This report has many aspects that are the subject of vigorous debate and remain fully or partially
outside public knowledge. CRS does not claim to independently confirm any sources cited within
this report that attribute specific positions or views to various Israeli, U.S., or other officials.
This is an update of a report dated March 28, 2012. However, the only updated material is the
initial section entitled “Developments from Late March to September 2012.”

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Contents
Developments From Late March to September 2012 ...................................................................... 1
Issue Status: Possible Israeli Decision and Public Debate ........................................................ 1
Possible Operational and Cost-Benefit Considerations for Israel ............................................. 4
U.S. Concerns and Possible Responses: Possible Impact on Israeli Decisionmaking .............. 5
Potential Iranian Responses: Possible Impact on Israeli Decisionmaking ................................ 7
Congressional Action................................................................................................................. 8
Introduction, Issue Overview, and Questions for Congress............................................................. 9
Preliminary Considerations Regarding an Israeli Decision ........................................................... 17
Nature of the Threat—Differing Stated Perceptions ............................................................... 17
Possible “Zone of Immunity” and Israel’s Ability to Act Independently ................................ 20
Military Action Versus Alternative Courses of Action ............................................................ 21
The Israeli Decisionmaking Process.............................................................................................. 24
Decisionmakers: Views and Interactions................................................................................. 24
Public Opinion and Debate in Israel........................................................................................ 28
Potential Factors in an Israeli Decision: Stances and Anticipated Responses Outside Israel ........ 30
The United States..................................................................................................................... 30
Regionally and Internationally ................................................................................................ 34
Potential Factors in an Israeli Decision: Possible Operational Aspects of an Israeli Strike .......... 35
Access...................................................................................................................................... 36
Aircraft .................................................................................................................................... 38
Weapons .................................................................................................................................. 38
Potential Factors in an Israeli Decision: Estimated Effects of a Possible Strike ........................... 41
Effect on Iran’s Nuclear Program ............................................................................................ 41
Effect on Iran’s Regime........................................................................................................... 44
Potential Factors in an Israeli Decision: Possible Iranian Responses to a Strike........................... 45
Diplomatic Responses ............................................................................................................. 45
Hostile but Non-Military Responses ....................................................................................... 46
Military Responses .................................................................................................................. 46
Attacks on Israeli Territory................................................................................................ 47
Attacks Against Israeli Interests Abroad ........................................................................... 52
Expanded Military Responses ................................................................................................. 53
Attempted Closure of the Strait of Hormuz ...................................................................... 53
Attacks on U.S. Allies in the Persian Gulf ........................................................................ 54
Attacks on U.S. Installations and Interests in the Region or Elsewhere Abroad............... 54
Possible Attacks on the U.S. Homeland ............................................................................ 55
Conclusion: Possible Implications for Congress ........................................................................... 56

Figures
Figure 1. Map of Major Iranian Facilities in Regional Context..................................................... 15
Figure 2. Timeline of Relevant Events Involving Iran’s Nuclear Program and Israel................... 16
Figure 3. Underground Nuclear Facilities and Penetrating Munitions .......................................... 40

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Figure 4. Potential Ranges of Iranian Medium-Range Ballistic Missiles...................................... 49
Figure 5. Possible Ranges of Rockets and Missiles from Iranian-Allied Groups.......................... 51

Contacts
Author Contact Information........................................................................................................... 57
Acknowledgments ......................................................................................................................... 57

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Developments From Late March to September 2012
Many media reports in Israel, the United States, and elsewhere since late March 2012—and
especially since August—have focused closely on apparent differences between the Netanyahu
government in Israel and the Obama Administration on potential “red lines” for possible military
action. After seemingly unsuccessful attempts by Israeli Prime Minister Binyamin Netanyahu to
persuade President Barack Obama to present Iran with a time-specific ultimatum (see “U.S.
Concerns and Possible Responses: Possible Impact on Israeli Decisionmaking” below), prospects
for future Israeli military action remain unclear. The complex array of information and views set
forth in this section may help U.S. policymakers address relevant questions on this issue within
the context of various regional and global economic, political, and security concerns.
As with other parts of the report, this section has many elements that are the subject of vigorous
debate and remain fully or partially outside public knowledge. CRS does not claim that it has
confirmed independently any sources cited within this report that attribute specific positions or
views to Israeli, U.S., or other officials.

Issue Status: Possible Israeli Decision and Public Debate
Israeli and international media reports have continued speculating that Israeli Prime Minister
Binyamin Netanyahu may order an Israeli military attack on Iranian nuclear facilities in the
coming months. The rationale for a possible strike is set forth in detail below (see “Possible
“Zone of Immunity” and Israel’s Ability to Act Independently”). This has enlivened an already
vigorous public debate in Israel (as discussed below). A wide array of current and former leaders
in Israel’s political, military, and security establishments have either publicly expressed
opposition or are reportedly opposed, not to an attack in principle, but to an attack without U.S.
support given possible operational and political fallout.1 Seemingly heated private and public
exchanges between the Obama Administration and Netanyahu government (discussed below)
have occurred within the context of frequent consultations—including summer 2012 visits to
Israel by Secretary of State Hillary Clinton, Secretary of Defense Leon Panetta, and National
Security Advisor Tom Donilon.
In a September 27 speech before the United Nations General Assembly in which he stressed that
the hour was getting “very late,” Netanyahu said, “I believe that faced with a clear red line, Iran
will back down. This will give more time for sanctions and diplomacy to convince Iran to
dismantle its nuclear weapons program altogether.” He asserted that otherwise, at current rates of
uranium enrichment, Iran could reach the final stage of enrichment by the spring or summer of
2013.2 Netanyahu’s remarks appear to have convinced several former Israeli officials and other
international commentators that the timeline for a possible Israeli attack has been pushed back at
least to early 2013.3 However, one Israeli journalist reportedly wrote, “If one takes his statements
1

See, for example, David Remnick, “The Vegetarian,” New Yorker, September 3, 2012.
http://www.haaretz.com/news/diplomacy-defense/netanyahu-faced-with-clear-red-line-iran-will-back-down-onnuclear-program.premium-1.466987
3
Dan Margalit, “A sigh of relief at the White House,” Israel Hayom, September 28, 2012; Dan Williams, “Israelis see
no Iran war this year after Netanyahu’s speech,” Reuters, September 28, 2012; Jay Solomon, “Netanyahu Demands
‘Red Line’ on Iran,” Wall Street Journal, September 28, 2012.
2

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seriously, within a short time, months at most, if Iran is not deterred and if the US does not attack,
Israel will launch an attack on its own.”4
Speculation persists regarding a possible Israeli strike, even though—as discussed below (see
“Effect on Iran’s Nuclear Program”)—most Israeli officials and analysts agree that military action
might only delay, not destroy, Iran’s nuclear program. Other efforts—diplomacy, sanctions,
reported covert action, even implied threats of military action by Israel or the United States—
have not led Iran’s regime either to stop expanding its uranium enrichment activities or to take
steps toward assuring the international community that its nuclear program is confined to purely
peaceful purposes. Israel is not a direct party to the P5+1 (see “Military Action Versus Alternative
Courses of Action” below for a definition of this term) negotiations over Iran’s nuclear program,
where technical discussions that continued in the spring and summer of 2012 made no apparent
progress.5
In August 2012, Israeli Deputy Foreign Minister Danny Ayalon called upon the international
community to acknowledge that diplomacy had failed.6 In August 2012, Congress and the
President enacted the Iran Threat Reduction and Syria Human Rights Act of 2012 (P.L. 112-158),
an additional sanctions law aimed at Iran’s oil exports.7 Most analysts agree that these sanctions,
combined with preexisting U.S. and international sanctions (see “Military Action Versus
Alternative Courses of Action” below), are significantly affecting Iran’s economy, and reports
indicate that Israeli officials may seek additional sanctions.8 The August 2012 International
Atomic Energy Agency (IAEA) report on Iran’s nuclear program reiterated concern over
continued enrichment and evidence of possible military dimensions to the program.9 For more
information on U.S. and international sanctions, diplomatic efforts, and their collective impact, as
well as the August IAEA report, see CRS Report RL32048, Iran: U.S. Concerns and Policy
Responses, by (name redacted); CRS Report RS20871, Iran Sanctions, by (name redacted);
and CRS Report R40094, Iran’s Nuclear Program: Tehran’s Compliance with International
Obligations, by (name redacted).
Israeli concerns regarding a potential Iranian nuclear weapons capability may be exacerbated by
reports that Iran has deliberately provided faulty information about its nuclear program to
international monitors.10 This may further heighten Israeli and international concerns about the
reliability and comprehensiveness of current information regarding the program and its progress.
Media attention to deliberations among Netanyahu and the other members of the 14-member
Israeli security cabinet (see “Decisionmakers: Views and Interactions” below) has intensified. A
vote of approval from the security cabinet is necessary before ordering military action. A late
August New York Times report indicated that of those within the security cabinet whose views are
4

Nahum Barnea, quoted in Harriet Sherwood, “Binyamin Netanyahu's UN bomb triggers derision and admiration,”
guardian.co.uk, September 28, 2012.
5
For a discussion of Israel’s reported positions regarding negotiations, see Gareth Porter, “U.S.-Israel Deal to Demand
Qom Closure Threatens Nuclear Talks,” InterPress Service, April 12, 2012.
6
Jodi Rudoren, “Israeli Minister Asks Nations to Say Iran Talks Have Failed,” New York Times, August 12, 2012.
7
CRS Report RS20871, Iran Sanctions, by (name redacted).
8
Isabel Kershner, “Israeli Foreign Ministry Calls for More Sanctions on Iran,” nytimes.com, September 27, 2012.
9
IAEA, Implementation of the NPT Safeguards Agreement and relevant provisions of Security Council resolutions in
the Islamic Republic of Iran, August 2012.
10
Stuart Winer, “Iran admits it deceived the West over nuclear program,” Times of Israel, September 20, 2012.

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thought to be known, approximately six members are in favor of a strike, with three or four
opposed.11
The implications for Israeli decisionmaking of press articles pointing to Israeli emphasis on home
front safety12 and streamlined cabinet procedures reportedly giving Netanyahu greater control
over the decisionmaking process13 are unclear. In August 2012, Netanyahu appointed Avi Dichter,
a former head of the Israel Security Agency (also known as the Shin Bet), as Home Front Defense
Minister after his predecessor was named ambassador to China. Reports indicate that Dichter—
though not a member of the security cabinet—has joined the group of eight other ministers
(previously known as the “octet,” now known as the “group of nine”) that has particularly
significant influence over the national security decisionmaking process.14 Netanyahu disbanded
security cabinet meetings earlier than planned during the first week of September, reportedly due
to leaks of disagreements over when Iran would reach a “zone of immunity” (the term is
described below—see “Possible “Zone of Immunity” and Israel’s Ability to Act
Independently”).15 If, when, and how Netanyahu might call a vote in the security cabinet and/or
the full 29-member cabinet remains unclear.16
Another possible consideration for Netanyahu is that he will face national elections sometime in
2013; he has faced a drop in approval ratings in 2012—from over 50% in March to 31% in
August.17 This drop may not fundamentally undermine Netanyahu’s chances for another prime
ministerial term in Israel’s coalition-based parliamentary system. However, changing electoral
prospects might affect his and other actors’ decisionmaking on Iran.18 Polls continue to indicate
that a majority of Israelis opposes a unilateral Israeli strike against Iranian nuclear facilities at this
time, but that a slight majority would support a joint U.S.-Israel strike.19 Ehud Olmert, Israel’s
previous prime minister, who reportedly ordered Israel’s 2007 strike on a presumed Syrian
11
Rudoren and Sanger, op. cit. A September bulletin from a Washington, DC-based consulting firm asserted a slight
numerical edge within the security cabinet for those opposing a strike, with four (including Defense Minister Ehud
Barak) listed as “unknown” or “uncertain.” Nathaniel Kern and Matthew M. Reed, “Netanyahu’s Divided Cabinet,”
Foreign Reports Bulletin, September 19, 2012. Reports have focused on possible changes in the position of Barak, one
of the primary public exponents of a possible Israeli strike, as well as the views of Vice Prime Minister and Minister for
Strategic Affairs Moshe Ya’alon. See Yossi Verter, “Reshuffling the deck: Barak now opposes Israeli strike on Iran,
sources say,” Ha’aretz, September 7, 2012; Hagai Golan and Stella Korin-Lieber, “Barak: I see eye-to-eye with
Netanyahu on Iran,” Globes, September 13, 2012; Ari Shavit, “IDF chief of staff-turned-vice premier: ‘We are not
bluffing,’” Ha’aretz Magazine, June 14, 2012; Remnick, op. cit.
12
Calev Ben-David and Gwen Ackerman, “Israel to Hold Home Front Drill Amid Rise in Iran Tensions,” Bloomberg,
August 12, 2012.
13
Attila Somfalvi, “Revised gov't protocol gives PM unprecedented powers,” ynetnews.com, August 12, 2012.
14
Herb Keinon, “Security cabinet remains key in deciding on war,” jpost.com, September 6, 2012.
15
“Citing leak, Netanyahu disbands security cabinet meeting,” Jewish Telegraphic Agency, September 5, 2012.
16
Keinon, op. cit. A September 2012 New Yorker article on Israel’s 2007 strike on the presumed Al Kibar reactor in
Syria discusses how security cabinet deliberations proceeded in that case. David Makovsky, “The Silent Strike,” New
Yorker, September 17, 2012.
17
“Netanyahu Approval,” jewishjournal.com/rosnersdomain.
18
See, for example, Yossi Verter, “In UN speech, Netanyahu pitches Iran as key selling point for early Israeli
elections,” haaretz.com, September 28, 2012.
19
http://www.pcpsr.org/survey/polls/2012/p45ejoint.html. This poll was taken on September 9-14, 2012, and has a
margin of error of 4.5%. It was conducted jointly by the Harry S. Truman Research Institute for the Advancement of
Peace at the Hebrew University of Jerusalem and the Palestinian Center for Policy and Survey Research in Ramallah.
The poll was supported by the Ford Foundation Cairo office and the Konrad Adenauer Stiftung in Ramallah and
Jerusalem. See Remnick, op. cit., for a discussion of the possible impact of polls on Netanyahu’s decisionmaking.

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nuclear reactor, and whose political comeback prospects have been the subject of Israeli domestic
speculation,20 was quoted as saying in September:
Worse comes to worst, and all options have been tried, then, naturally it may force Israel to
act to defend its existence. But it must be clear that we tried with the international
community, and particularly with the United States, to act together before we resort to the
last option of an Israeli military operation.21

Public debate in Israel continues to reflect disagreement over both the likelihood and the
advisability of an attack. At least one analyst has asserted that Israeli leaders appear to be
preparing the “Israeli home front, and international public opinion, for the inevitably messy
aftermath of any such action.”22 Other commentators—who note that Israeli leaders did not
provide prior warning before military attacks in 1981 and 2007, respectively, against presumed
Iraqi and Syrian nuclear reactors—have said that “all the loose talk of a brewing strike is a signal
the warnings are little more than posturing.”23 One journalist argued that Israel might strike Iran
“just to prove that they’re serious” to a largely skeptical world.24 Another journalist wrote that the
key question “is whether Netanyahu sees the threat of Iran building a nuclear bomb as so severe
that he is willing to risk severe friction with the United States, a severe blow to the Israeli
economy, the possibility of a bloody regional war, and a hail of missiles from Iran, Hezbollah,
Hamas, and perhaps Syria hitting Israel.”25

Possible Operational and Cost-Benefit Considerations for Israel
Israeli censorship rules reportedly limit public discussion of operational details of a possible
Israeli strike on Iranian nuclear facilities. Nevertheless, sources that discuss potential military
capabilities, options, and outcomes, such as a 2012 book by an Israeli military correspondent and
an Israeli military historian,26 could shed some light on Israeli decisionmakers’ calculations. U.S.
and international sources have provided some additional information on this subject since late
March 2012.27 A September report from the Center for Strategic and International Studies (CSIS)
concluded that although an Israeli strike was possible, “it would be complex and high risk in the
operational level and would lack any assurances of a high mission success rate.” Furthermore, the
report stated that Iranian retaliation will have “devastating regional consequences.”28 Some other

20

Isabel Kershner, “Former Israeli Premier Gets Suspended Sentence,” New York Times, September 24, 2012.
Makovsky, op. cit.
22
Oren Kessler, “The Decider,” foreignpolicy.com, August 23, 2012, citing views attributed to Uzi Rabi, director of the
Moshe Dayan Center for Middle Eastern Studies at Tel Aviv University.
23
Ibid., citing Israeli journalists Motti Kirshenbaum and Ben Caspit.
24
Ben Caspit, quoted in Rudoren, op. cit.
25
Yossi Melman, “Israel May Have Time Limit in Iran Attack Decision” (translated from Hebrew), israelspy.com,
August 10, 2012.
26
Yaakov Katz and Yoaz Hendel, Israel vs. Iran: The Shadow War, Washington, DC: Potomac Books, 2012, pp. 167193.
27
For general background information, see “Potential Factors in an Israeli Decision: Possible Operational Aspects of an
Israeli Strike” and “Potential Factors in an Israeli Decision: Estimated Effects of a Possible Strike” below.
28
Anthony H. Cordesman and Abdullah Toukan, Analyzing the Impact of Preventive Strikes Against Iran’s Nuclear
Facilities, Center for Strategic and International Studies, September 10, 2012.
21

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commentators have presented what they claim to be leaked information from U.S. or Israeli
sources pertaining to possible operational details of potential Israeli military action.29
In response to a question in an August Ha’aretz interview about whether the potential domestic,
regional, and international costs of Israeli military action would be worth “a two-year delay in
Iran’s inevitable nuclearization,” an Israeli “decisionmaker” widely assumed to be Defense
Minister Barak30 said:
Our objective is not to wipe out the Iranian nuclear program. But it must be understood that
the real story is the contest between Iran’s nuclearization and the fall of the current regime of
the ayatollahs in Iran. If we succeed in pushing off the nuclear program by six or eight or 10
years, there’s a good chance that the regime will not survive until the critical moment. So the
objective is delay.31

Meir Dagan, who ended his eight-year tenure as head of Israel’s Mossad in early 2011, is one of
the most outspoken opponents of an Israeli strike against Iranian nuclear facilities in the near
future. When interviewed for a September New Yorker article, Dagan said:
An Israeli bombing would lead to a regional war and solve the internal problems of the
Islamic Republic of Iran. It would galvanize Iranian society behind the leadership and create
unity around the nuclear issue. And it would justify Iran in rebuilding its nuclear project and
saying, “Look, see, we were attacked by the Zionist enemy and we clearly need to have it.”32

U.S. Concerns and Possible Responses: Possible Impact on Israeli
Decisionmaking
As mentioned above and discussed further below (see “The United States”), U.S. concerns and
potential responses regarding the consequences of a possible Israeli strike on Iranian nuclear
facilities could significantly affect Israeli decisionmaking. Israeli differences with the Obama
Administration over the Iranian nuclear issue have reportedly been the subject of intense private
discussions.33 Additionally, U.S. concerns about regional and international perceptions of U.S.
involvement in a potential Israeli attack and the durability of the international sanctions regime
29
For example, in August, a U.S. blogger posted what he claimed was an Israeli briefing document outlining Israel’s
war plans against Iran. He claimed that the document was passed to him “by a high-level Israeli source who received it
from an IDF officer.” Richard Silverstein, “Bibi’s Secret War Plan,” Tikun Olam, August 15, 2012. Passages posted
from the alleged document anticipate massive Israeli cyberattacks, followed by land- and naval-based missile attacks
and attacks by the Israel Air Force against a wide range of Iranian nuclear facilities, military targets, and key individual
professionals and commanders. Ibid. A late September report cited unnamed U.S. military and intelligence officials
discussing various Israeli attack options, including a possible special forces raid on the deep-underground uranium
enrichment facility at Fordow. Mark Perry, “The Entebbe Option,” foreignpolicy.com, September 27, 2012. A late
March report by the same author also cited unnamed U.S. government officials in speculating that Israel could possibly
use airfields in Azerbaijan to land planes or conduct search-and-rescue missions following an attack in Iran. Mark
Perry, “Israel’s Secret Staging Ground,” foreignpolicy.com, March 28, 2012. Israeli Foreign Minister Avigdor
Lieberman subsequently dismissed reports of possible Israeli use of Azeri airfields as “science fiction.” Lada
Evgrashina and Margarita Antidze, “Israel denies it has access to Azerbaijan air bases,” Reuters, April 23, 2012.
30
Harriet Sherwood, “Israeli speculation over Iran strike reaches fever pitch,” guardian.co.uk, August 14, 2012.
31
Ari Shavit, “A grave warning on Iran from ‘the decision maker,’” Ha’aretz, August 11, 2012.
32
Remnick, op. cit.
33
Anne Gearan, “Rep. Mike Rogers tells of heated exchange between Netanyahu, U.S. envoy over Iran nuclear
program,” washingtonpost.com, September 6, 2012.

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against Iran may have at least partly motivated the following August 2012 comments by General
Martin Dempsey, Chairman of the Joint Chiefs of Staff: “I don’t want to be accused of trying to
influence—nor do I want—nor do I want to be complicit if [the Israelis] choose to do it.”34
President Obama, in his September 25 address at the annual opening session of the U.N. General
Assembly in New York, said that time remains for diplomacy with Iran, but is “not unlimited.”35
He also said that the United States “will do what we must to prevent Iran from obtaining a nuclear
weapon.”36 Earlier in September, the Administration apparently rejected Israeli requests both for
setting firm deadlines for U.S. military action, and for an Obama-Netanyahu meeting later in the
month on the sidelines of the annual opening sessions of the U.N. General Assembly.37 In
declining to set deadlines, Secretary of State Clinton set forth her view of U.S.-Israel differences
on the issue in a September 2012 interview:
They’re more anxious about a quick response because they feel that they’re right in the
bull’s-eye, so to speak. But we’re convinced that we have more time to focus on these
sanctions, to do everything we can to bring Iran to a good-faith negotiation.38

Responding at a news conference, Netanyahu was quoted as saying:
If Iran knows that there’s no deadline, what will it do? Exactly what it’s doing: It’s
continuing without any interference toward obtaining nuclear weapons capability and from
there nuclear bombs. The world tells Israel: Wait. There’s still time. And I say: Wait for
what? Wait until when? Those in the international community who refuse to put red lines
before Iran don't have a moral right to place a red light before Israel.39

U.S. responses to Netanyahu’s statement, including by Members of Congress, have varied.40

34

Transcript of remarks by General Martin E. Dempsey, U.S. Embassy in London, England, August 30, 2012, available
at http://www.jcs.mil/speech.aspx?id=1727.
35
Matt Spetalnick and Mark Felsenthal, “U.S. will ‘do what we must’ on Iran, Ban Ki-moon opposes threats,” Reuters,
September 25, 2012.
36
Ibid.
37
Netanyahu has subsequently consulted with President Obama via telephone, and ultimately met in New York on
September 27 with Secretary of State Clinton.
38
Indira A.R. Lakshmanan, “U.S. ‘Not Setting Deadlines’ for Iran, Clinton Says,” Bloomberg, September 10, 2012.
39
Joshua Mitnick and Jay Solomon, “Israel Blasts U.S. Over Iran—Netanyahu Says Obama Administration Has No
‘Moral Right’ to Restrain Jewish State,” Wall Street Journal, September 12, 2012. An Israeli “decisionmaker” widely
believed to be Defense Minister Barak was quoted as saying in August, “But let me remind you that Ronald Reagan did
not want to see a nuclear Pakistan but Pakistan did go nuclear. Bill Clinton did not want to see a nuclear North Korea,
but North Korea went nuclear.” Shavit, “A grave warning on Iran from ‘the decision maker,’” op. cit. In September,
however, Barak acknowledged “impressive preparations by the Americans to counter Iran on all fronts” and asserted
that some U.S. red lines for military action already existed. Barak Ravid, “Barak hints U.S. military preparations may
eliminate Israel's need for Iran strike,” haaretz.com, September 7, 2012; Golan and Korin-Lieber, op. cit.
40
Senator Barbara Boxer, the sponsor of the U.S.-Israel Enhanced Security Cooperation Act of 2012 (P.L. 112-150),
wrote a letter dated September 12 to Netanyahu urging Netanyahu to “step back and clarify your remarks so that the
world sees that there is no daylight between the United States and Israel.” Text available at
http://boxer.senate.gov/en/press/releases/091212b.cfm. A group of 128 Republican Members of Congress sent a
September 13 letter to President Obama calling on him to meet with Netanyahu during his planned U.S. visit later in
the month. Text available at http://kingston.house.gov/news/documentsingle.aspx?DocumentID=308403. In September
20 testimony before the Middle East and South Asia Subcommittee of the House Committee on Foreign Affairs, former
deputy national security advisor (during the George W. Bush Administration) Elliott Abrams said that no president of
the United States would give Israel a pledge to attack another country “by a date certain.”

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Regarding levels of U.S.-Israel security cooperation focused on this issue, former Obama White
House national security official Dennis Ross suggested in August that “senior American officials
should ask Israeli leaders if there are military capabilities we could provide them with—like
additional bunker-busting bombs, tankers for refueling aircraft and targeting information—that
would extend the clock for them.”41 A U.S. source has reported that the United States has
drastically reduced the scope of its planned involvement in a late October joint missile defense
exercise with Israel known as Austere Challenge 12.42 The United States and more than 30 other
countries reportedly conducted joint military maneuvers in the Persian Gulf in late September,
possibly in preparation for potential Iranian responses to an Israeli attack.43

Potential Iranian Responses: Possible Impact on Israeli
Decisionmaking
As discussed below (see “Potential Factors in an Israeli Decision: Possible Iranian Responses to a
Strike”), Israeli leaders’ calculations regarding Iran’s potential response to an attack on its nuclear
facilities may affect their decisionmaking. Leading Iranian military commanders and advisors, as
well as Hezbollah’s leader Hassan Nasrallah, have indicated that Iran and Hezbollah would
retaliate robustly against Israel, and that Iran would possibly also target U.S. positions in the
Gulf.44 Reports indicate that Iran test-fired four surface-to-sea missiles near the Strait of Hormuz
in late September, and that it is planning to hold major military preparedness maneuvers in the
near future.45 One senior Iranian Revolutionary Guard Corps (IRGC) commander reportedly said
in September that Iran could launch a preemptive strike against Israel if it were sure Israel was
preparing to attack it.46 Reports from September that Iran bears responsibility for recent
cyberattacks against various U.S. banks and companies47 could presage similar attacks in
retaliation for a possible Israeli military strike.
Iranian or Iranian-allied terrorist plots against Israeli targets (see “Attacks Against Israeli Interests
Abroad” below) also appear to remain a threat. Several reports alleged Hezbollah involvement48
in the July 2012 bus suicide bombing in Burgas, Bulgaria, that targeted an Israeli tourist group—
41

Dennis B. Ross, “How America Can Slow Israel’s March to War,” New York Times, August 17, 2012.
Karl Vick and Aaron J. Klein, “Exclusive: U.S. Scales Back Military Exercise with Israel, Affecting Potential Iran
Strike,” time.com, August 31, 2012.
43
Peter Kenyon, “U.S. Naval Exercises Send Message in the Tense Gulf,” National Public Radio, September 24, 2012.
Known as the International Mine Countermeasures Exercise (IMCMEX), the maneuvers reportedly included, among
other countries, the United Kingdom, France, Japan, Yemen, and Jordan. Laura Sukhtian, “Massive Anti-Mine Naval
Exercise Underway in Gulf,” Defense News, September 17, 2012.
44
“IRGC Commander Warns of Iran's Devastating Response to Israeli Attack,” Fars News Agency, September 17,
2012; Laila Bassam, “Iran could strike US bases if Israel attacks: Hezbollah,” Reuters, September 3, 2012; Zahra
Hosseinian, “Iran: Hezbollah will defend us ‘easily’ against Israeli attack – Iran,” Reuters, September 14, 2012.
45
Nick Schifrin and Matthew McGarry, “Iran, US Flex Military Muscles in Persian Gulf,” ABC News, September 25,
2012; Robert Tait, “Iran plans military exercises in preparation for Israeli strike on nuclear facilities,” telegraph.co.uk,
September 16, 2012.
46
Zahra Hosseinian and Rania El Gamal, “Iran could launch pre-emptive Israel strike-commander,” Reuters,
September 23, 2012.
47
Ellen Nakashima, “Iran blamed for cyberattacks on U.S. banks and companies,” Washington Post, September 21,
2012.
48
Nicholas Kulish and Eric Schmitt, “Hezbollah Is Blamed for Attack on Israeli Tourists in Bulgaria,” New York
Times, July 19, 2012.
42

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killing 6 (including the Bulgarian driver) and injuring at least 32. The broader strategic purpose of
such plots—that is, whether they seek to deter or provoke possible Israeli or international action
of a specific nature—is difficult to discern.

Congressional Action
In addition to enacting additional sanctions (as discussed above) against Iran in August 2012,
Congress has taken other actions in 2012 with possible relevance to the Iranian nuclear issue.
Congress and the President may have at least partly focused on bolstering Israeli capabilities visà-vis Iran in enacting the U.S.-Israel Enhanced Security Cooperation Act of 2012 (P.L. 112-150)
on July 27. The act contains non-binding “sense of Congress” language focusing largely on
possible avenues of cooperation outside of direct bilateral aid, including expediting specific types
of arms sales (such as F-35 fighter aircraft, refueling tankers, and bunker buster munitions);
providing excess defense articles; boosting operational, intelligence, and political-military
coordination; and providing additional aid for Israel’s Iron Dome short-range missile defense
system and U.S.-Israel cooperative missile defense programs. The act also extended deadlines for
Israel to access U.S. war reserves stockpiles and to draw upon existing loan guarantees.
Furthermore, the House passed a measure on May 27, 2012—the National Defense Authorization
Act for FY2013 (H.R. 4310)—that would, if ultimately enacted, authorize up to $680 million in
additional funding for Iron Dome from FY2012 to FY2015.49 Congress and the President made an
initial $205 million appropriation for the program in FY2011. An additional $70 million in U.S.
funding was reprogrammed for Iron Dome in FY2012 from prior-year Missile Defense Agency
funding for various programs, and will presumably count toward the $680 million figure if H.R.
4310 is enacted. Israel has reportedly spent more than $200 million on initial stages of Iron
Dome’s development, procurement, and deployment.50 One report indicates that the House Armed
Services Committee may seek to condition additional U.S. funding for Iron Dome on coproduction or technology sharing because of the system’s possible application for forwarddeployed U.S. military units.51
On September 22, the Senate passed S.J.Res. 41 by a vote of 90-1. If subsequently passed by the
House, this joint resolution would express the non-binding “sense of Congress” rejecting “any
United States policy that would rely on efforts to contain a nuclear weapons-capable Iran”, and
joining “the President in ruling out any policy that would rely on containment as an option in
response to the Iranian nuclear threat.” S.J.Res. 41 explicitly states, however, that it shall not be
construed as “an authorization for the use of force or a declaration of war.”
The remainder of this report is unchanged from the version published on March 28, 2012.

49
The version of the Department of Defense Appropriations Act, 2013 (H.R. 5856) reported by the Senate
Appropriations Committee would, if enacted, provide $211 million to Israel for Iron Dome in FY2013, subject to
possible budget sequestration. For information on sequestration, see CRS Report RL33222, U.S. Foreign Aid to Israel ,
by (name redacted)
50
Jamie Levin, “Israel’s economy will pay heavy price for Iron Dome,” Ha’aretz, March 23, 2012.
51
Spencer Ackerman, “U.S. Funds Israel’s ‘Iron Dome,’ But Doesn’t (Quite) Know How It Works,” wired.com,
August 21, 2012.

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Introduction, Issue Overview, and Questions for
Congress52
In February 2012, a U.S. newspaper columnist reported that Secretary of Defense Leon Panetta
“believes there is a strong likelihood that Israel will strike Iran in April, May or June.”53 Less than
two weeks later in testimony before the Senate Armed Services Committee on February 14,
Secretary Panetta declined when questioned to take a position on the likelihood of a spring 2012
Israeli attack against nuclear facilities in Iran.54
Secretary Panetta’s comments were only part of the stream of statements from U.S. and Israeli
officials and media reports that drew attention to a question that has periodically recurred in the
national security discourse of both countries (and more broadly): Might Israel choose to attack
Iran’s nuclear facilities, possibly counter to U.S. advice?
For decades, successive regimes in Iran have engaged in nuclear-related activities. The ultimate
goal of these activities, however, has remained stubbornly ambiguous. Despite extensive
examination of these activities by both government and non-government experts around the
world, including on-site investigation by representatives of the International Atomic Energy
Agency (IAEA), no definitive proof has been offered to conclude with certainty the validity of
•

Iran’s claims that its nuclear work is entirely for peaceful purposes as allowed
under the Nuclear Non-Proliferation Treaty (NPT) to which it is a party;

•

concerns of some government officials and non-government experts in the United
States and elsewhere that Iran is seeking a “nuclear capability” below the
threshold of nuclear weapons (which entails the combination of fissile material
with a nuclear warhead and an appropriate delivery vehicle) that nevertheless
may allow it to rapidly cross the nuclear threshold at some time in the future; or

•

allegations that the Iranian regime is committed to acquiring nuclear weapons.

Ongoing disagreements among analysts as to how far away Iran is from achieving a “nuclear
capability” or nuclear weapons if it is committed to doing so only exacerbate this ambiguity and
uncertainty regarding Iran’s nuclear-related efforts. This ambiguity and uncertainty is a major
feature of the environment in which international actors decide their policies and actions vis-à-vis

52

Prepared by (name redacted), Specialist in Middle Eastern irs,
Affawith contributions from (name redacted), Specialist
in Middle Eastern Affairs and (name redacted), Analyst in Nonproliferation. See also CRS Report RL32048,
Iran: U.S.
Concerns and Policy Responses, by (name redacted); CRS Report RL33476, Israel: Background and U.S. Relations,
by (name redacted); and CRS Report R40094,
Iran’s Nuclear Program: Tehran’s Compliance with International
Obligations, by (name redacted). Outside reports on the issue include Anthony H. Cordesman and Alexander Wilner
, Iran
and the Gulf Military Balance – II: The Missile and Nuclear Dimensions: Working Draft, Center for Strategic and
International Studies, February 22, 2012. Ronen Bergman, “Will Israel Attack Iran?”, New York Times Magazine,
January 25, 2012; Dalia Dassa Kaye, et al., Israel and Iran: A Dangerous Rivalry, RAND Corporation, 2011; Dana H.
Allin and Steven Simon, The Sixth Crisis: Iran, Israel, America and the Rumors of War, New York: Oxford University
Press, 2010.
53
David Ignatius, “Of a mind to attack Iran,” Washington Post, February 3, 2012.
54
At the same hearing, Secretary Panetta acknowledged having talked with the columnist who wrote the February 2012
report “about a lot of things.”

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Iran. The view a state holds of the ultimate goal of Iran’s nuclear-related activities informs the
approach it takes in dealing with the Iranian regime.
For various reasons—including geopolitical, historical, and ideological—the prospect of an Iran
with nuclear weapons arguably affects the threat perceptions of Israel more than those of the
United States55 or other nations. Twice in its history, Israel has conducted air strikes aimed at
preventing a regional actor from acquiring a nuclear weapons capability—destroying Iraq’s
Tammuz-Osirak reactor in 1981 and a presumed reactor under construction at Al Kibar near Deir
al Zur in Syria in 2007. For some period of time, Israeli leaders have conveyed their view that
Israel may similarly be compelled to act to prevent a potentially nuclear-armed Iran. Analysts
generally agree that Israeli military action against multiple Iranian nuclear facilities would be
significantly more complex operationally than these previous attacks, both of which targeted
single facilities that were closer in range to Israel (see Figure 1 below). What lessons the
previous strikes—particularly the one on Osirak in 1981—impart for an Israeli decision on
whether to strike Iran is a subject of debate.56
For Congress, the potential impact—short- and long-term—of an Israeli decision regarding Iran
and its implementation is a critical issue of concern.
Since Iran’s nuclear program became a major international issue a decade ago, Israel has deferred
to the United States and other actors in coordinating diplomacy and implementing economic and
other sanctions aimed at convincing Iran to abandon activities that could allow it to develop
nuclear weapons. In recent years, however, reports suggest that Israel has pursued covert
means—including sabotage, cyberwarfare, and assassination—to intimidate Iran and delay the
nuclear program, with some reported success.57 Without confirming or denying involvement,
Israeli officials also generally have welcomed reports of events that might set back Iran’s nuclear
program.58
Even before the reports in recent months of possible Israeli military action, at various stages of
the international effort to persuade Iran to relinquish any possible nuclear weapons ambitions
some Israeli officials have hinted that Israel might be compelled to take unilateral action to
counter what they see as an Iranian nuclear weapons program.59 It was in the first three months of
55

Leslie Susser, “Spy vs. Spy,” Jerusalem Report, March 26, 2012, stating, “Although he too is committed to stopping
the Iranians, US President Barack Obama does not see the prospect of a nuclear Iran in the same apocalyptic terms as
Netanyahu does. True, a nuclear Iran would hurt vital American interests in the Middle East, but Iran is a long way
from American shores.”
56
Allin and Simon, p. 53. Some analysts cite Osirak to emphasize the potential perils of an attack on Iran, pointing to
Saddam Hussein’s subsequent clandestine pursuit of nuclear weapons on an accelerated timetable. Some use it to
emphasize the potential benefits of an attack, pointing to the U.S.-led international action from 1991-2003 that
eventually squelched Hussein’s nuclear ambitions, even though the international coalition was not initially assembled
in response to Iraq’s nuclear program, but its 1990 invasion of Kuwait. According to a 2010 book, many Israelis
believe that buying time through a strike on Iran “might prove worthwhile in [unanticipated] ways…” Ibid.
57
See Yossi Melman, “The war against Iran’s nuclear program has already begun,” Ha’aretz, December 2, 2011. Some
reports state that U.S. and British intelligence agencies have aided Israel with some non-lethal covert operations. Daniel
Klaidman, Eli Lake, and Dan Ephron, “Obama’s Dangerous Game with Iran,” Newsweek, February 13, 2012.
58
For example, after the January 2012 assassination of an Iranian nuclear scientist, Brig. Gen. Yoav Mordechai, an
Israeli military spokesman, reportedly wrote on his Facebook page, “I don’t know who took revenge on the Iranian
scientist, but I am definitely not shedding a tear.” Alan Cowell and Rick Gladstone, “Iran Reports Killing of Nuclear
Scientist in ‘Terrorist’ Blast,” New York Times, January 11, 2012.
59
See, for example, Jeffrey Goldberg, “Point of No Return,” The Atlantic, September 2010.

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2012, however, that the issue came into sharper relief for U.S. policymakers, including in
Congress. This was in part a result of comments by senior Israeli government officials and former
officials that intensified the debate within their country as to the wisdom and potential
effectiveness of military action against nuclear-related targets in Iran, linked to a similar
discussion in the United States and worldwide.
This report assesses this issue, focusing primarily on the decision that might be made by the
government of Israel. In particular, it examines the range of factors that could influence such an
Israeli decision.
Implementation of an Israeli decision to strike Iran’s nuclear-related facilities could have
significant implications for U.S. interests and goals related both to the nuclear issue itself and to
broader regional and international concerns, including U.S. relations with Israel.60 In assessing
those implications and considering possible action either before or after a possible Israeli strike
(see “Conclusion: Possible Implications for Congress” below), Congress and the Obama
Administration might consider the following questions:
Israeli Debate and Decision Regarding a Potential Attack:
•

What is the nature of the public and official debate in Israel over the Iranian
nuclear issue and possible Israeli, U.S., and international approaches to it,
including military and non-military options? How might that debate evolve?

•

What are the factors in Israeli thinking and who are the main actors involved in
the decision?

•

Under what conditions is a final political decision regarding military action
likely?

•

How does Israel assess the operational requirements of a potential strike?

Effect on Iran’s Nuclear Program and Regime:
•

Ultimately, is an attack more likely to prevent an Iran with nuclear weapons or help bring
it about? If an attack only delayed a potential nuclear weapons program in Iran, would
Israel feel compelled to take additional military action later?

•

What effect might an attack have on a potential Iranian decision to weaponize its nuclear
program?

•

Would an attack help or hinder the ongoing international effort to use diplomacy,
monitoring, sanctions, and possible threats of further military action to persuade Iran not
to pursue nuclear weapons? To what extent might the large coalition that is now working
with the United States to enforce sanctions against Iran fracture in the event of a strike?

•

Would an attack strengthen or weaken the Iranian regime, particularly given that current
trends indicate that the regime faces significant economic challenges and political
divisions?

60

For more information on U.S.-Israel relations, including the level of U.S. commitment to Israel’s security, see CRS
Report RL33476, Israel: Background and U.S. Relations, by (name redacted); and CRS Report RL33222,
U.S. Foreign Aid
to Israel, by (name redacted).

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Effect on Other U.S. Interests:
•

What retaliation from Iran and its regional allies (including Lebanese Hezbollah and
Hamas or other Palestinian militants) is likely against Israeli targets?

•

If Iran retaliated, would it limit the targeted area to Israel, or would it also target U.S.
interests and allies in the region and elsewhere? If Iran expands its response to U.S. or
U.S.-allied targets, what forms might that take?

•

What is the likelihood and potential scope of a crisis in the Strait of Hormuz and Persian
Gulf regarding global energy prices and potential region-wide conflict? What are other
possible regional consequences of an Israeli attack?

This report has many elements that are the subject of vigorous debate and remain fully or partially
outside public knowledge. CRS does not claim that it has confirmed independently any sources
cited within this report that attribute specific positions or views to Israeli, U.S., or other officials.

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Iran’s Nuclear Program and Facilities of Main Concern: A Primer61
Iran’s leaders claim that Iran’s nuclear program is solely for peaceful, civilian energy and research purposes. Since the 1979 Islamic
Revolution, Iran’s leaders (including current Supreme Leader Ayatollah Ali Khamene’i) have regularly spoken in public against the
development and use of nuclear weapons.62 Iran is a party to the Nuclear Non-Proliferation Treaty (NPT) and conducts its
declared nuclear activities under International Atomic Energy Agency (IAEA) monitoring and safeguards. For a discussion of Iran’s
compliance or non-compliance with international obligations regarding its nuclear program, see Figure 2 below and CRS Report
R40094, Iran’s Nuclear Program: Tehran’s Compliance with International Obligations, by (name redacted).
Iran’s gas centrifuge-based uranium enrichment program is currently the main source of proliferation concern for the
international community. Gas centrifuges enrich uranium by spinning uranium hexafluoride gas at high speeds to increase the
concentration of the uranium-235 isotope. Such centrifuges can produce both low-enriched uranium (LEU), which can be used in
nuclear power reactors, and highly enriched uranium (HEU).63 HEU and plutonium are the two types of fissile material used in
nuclear weapons.
Iran’s construction of a nuclear reactor moderated by heavy water has also been a source of proliferation concern. The reactor is
a proliferation concern because the reactor’s spent fuel will contain plutonium well-suited for use in nuclear weapons. To be used
in nuclear weapons, however, plutonium must be separated from the spent fuel—a procedure called “reprocessing.” Iran has said
that it will not engage in reprocessing, and there is no public evidence that Tehran either has constructed or is constructing a
reprocessing facility.
A 2007 National Intelligence Estimate said that Iran “probably would use covert facilities—rather than its declared nuclear sites—
for the production of highly enriched uranium for a weapon,”64 at least in part because of the difficulty of diverting significant
amounts of nuclear material from safeguarded facilities without detection. According to Colin Kahl, Deputy Assistant Secretary of
Defense for Middle East Policy from 2009 until the end of 2011, “there is no evidence that Iran has built additional covert
enrichment plants.”65
For a January 31, 2012, Senate Select Intelligence Committee hearing, James Clapper, Director of National Intelligence, submitted
written testimony stating that Iran has the “capacity to eventually produce nuclear weapons” and “is keeping open the option to
develop” such weapons, but added that “[w]e do not know... if Iran will eventually decide to build nuclear weapons.”
Some high-ranking U.S. and Israeli political decisionmakers reportedly differ on the question of how long action might remain
possible to prevent a potentially nuclear-armed Iran. This relates to the question of a possible “zone of immunity” discussed
below. Differences on this question reportedly persist even though U.S. and Israeli assessments are similar on the timetables for
Iran to
•

achieve the capability to develop and produce the components for a nuclear weapon; and

•

if it chooses, to weaponize successfully.

In a January 2012 60 Minutes interview, Secretary of Defense Leon Panetta said, “The consensus is that, if [Iran] decided to do it,
it would probably take them about a year to be able to produce a bomb and then possibly another one to two years in order to
put it on a deliverable vehicle of some sort in order to deliver that weapon.”66
According a February 2012 report from IAEA Director-General Yukiya Amano, Iran has produced 5,451 kilograms of LEU in the

61

Prepared by (name redacted), Analyst in Nonproliferation,
with contributions from (name redacted), Specialist in Middle
Eastern Affairs.
62
President Obama was quoted in a late February 2012 interview as saying that Iranian leaders in early 2012 have been
saying that “nuclear weapons are sinful and un-Islamic.” President Barack Obama, quoted in Jeffrey Goldberg, “Obama
to Iran and Israel: ‘As President of the United States, I Don’t Bluff,’” theatlantic.com, March 2, 2012.
63
LEU typically contains less than 5% uranium-235. Weapons-grade HEU typically contains approximately 90%
uranium-235.
64
Similarly, a CIA report for 2004 concluded that “inspections and safeguards will most likely prevent Tehran from
using facilities declared to the IAEA directly for its weapons program as long as Iran remains a party to the NPT.”
Unclassified Report to Congress on the Acquisition of Technology Relating to Weapons of Mass Destruction and
Advanced Conventional Munitions, January 1-December 31, 2004.
65
Colin H. Kahl, “Not Time to Attack Iran: Why War Should Be a Last Resort,” Foreign Affairs, January 17, 2012.
66
Transcript of remarks by Secretary Panetta from CBS’s 60 Minutes interview, January 29, 2012, available at
http://www.votesmart.org/public-statement/664274/cbs-60-minutes-transcript.

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Natanz commercial facility. This quantity of LEU, if further enriched, could produce enough HEU for four nuclear weapons,
according to the Institute for Science and International Security.67 According to Amano’s report, Iran has enriched approximately
95 kilograms of uranium up to 20% uranium-235 at the Natanz pilot facility and approximately 14 kilograms of similarly enriched
uranium at the Fordow facility.
The four facilities described below are under IAEA safeguards and monitoring:
Natanz
Iran has both a pilot centrifuge facility and a larger commercial facility located at this site. The commercial facility is reportedly
hardened by steel-reinforced concrete, buried underground, and covered by a mound of earth.68 This facility is capable of
eventually holding more than 47,000 centrifuges. Iran is currently using first-generation centrifuges in the commercial facility to
produce uranium enriched up to 5% uranium-235. Iran is using the pilot facility both to produce uranium enriched up to 20%
uranium-235 and also to test more-advanced centrifuges. According to the IAEA Director-General’s February 2012 report, Iran
has installed approximately 9,100 centrifuges in the commercial facility and is feeding uranium hexafluoride into as many as 8,808
of those centrifuges.
Fordow
Iran has a centrifuge facility located at this site—reportedly built into the side of a small mountain69 and specially hardened.70 The
facility is eventually supposed to contain approximately 3,000 centrifuges. Tehran has told the IAEA that the facility will be
configured to produce both uranium enriched to 5% uranium-235 and 20% uranium-235. Iran has installed approximately 700
first-generation centrifuges in the facility, and it is now reportedly producing 20%-enriched uranium.
Esfahan
Among several nuclear facilities located at this site, Iran’s above-ground uranium conversion facility converts uranium oxide into
several compounds, including gaseous uranium hexafluoride that can be enriched in centrifuges.
Arak
Iran is constructing a nuclear reactor moderated by heavy water at this above-ground site. Tehran also has a plant at this site for
producing heavy water. According to a February 2012 IAEA report, the plant appears to be operating.
Iran also has other nuclear-related facilities, including a light-water nuclear power reactor at Bushehr and a research reactor in
Tehran, as well as research, centrifuge production, and mining facilities. See “Effect on Iran’s Nuclear Program” below for a
textbox describing other facilities related to Iran’s nuclear program.
Figure 1 below provides a map showing facilities related or possibly related to Iran’s nuclear program, the site of the two
previous Israeli strikes in Iraq and Syria, and the surrounding region. Figure 2 below provides a timeline of selected events
relevant to the Iranian nuclear issue and Israel’s involvement.

(...continued)
67
ISIS Analysis of IAEA Iran Safeguards Report: Production of 20% Enriched Uranium Triples; Iran Increases
Number of Enriching Centrifuges at Natanz FEP by Nearly 50% and Signals an Intention to Greatly Expand the
Number of Centrifuges at Both Natanz and Fordow; Advanced Centrifuge Program Appears Troubled, Institute for
Science and International Security, February 24, 2012.
68
Todd Lindeman and Bill Webster, “Hardened targets,” Washington Post, March 1, 2012.
69
Ibid.
70
Joby Warrick, “Iran: Underground sites vulnerable, experts say,” Washington Post, March 1, 2012.

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Figure 1. Map of Major Iranian Facilities in Regional Context

Sources: Economist, adapted by CRS.
Notes: All locations are approximate. Parchin is an Iranian military testing facility that, according to the Washington Post, “U.S. officials believe was used a decade ago to test
explosive triggers of the kind used to detonate nuclear warheads.” Thomas Erdbrink and Joby Warrick, “Iran urged to grant access to inspectors,” Washington Post, March
9, 2012. According to the IAEA Director-General’s November 2011 report, the IAEA was “permitted by Iran to visit the site twice in 2005. From satellite imagery available
at that time, the Agency identified a number of areas of interest, none of which, however, included the location now believed to contain the building which houses the
explosives chamber mentioned above; consequently, the Agency’s visits did not uncover anything of relevance.” In early March 2012, the “P5+1” countries (United States,
United Kingdom, France, Germany, China, Russia) that manage international diplomacy with Iran on the nuclear issue urged Iran to grant IAEA monitors renewed access to
Parchin. See Figure 3 for additional reported details on the underground facilities at Natanz and Fordow.

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Figure 2. Timeline of Relevant Events Involving Iran’s Nuclear Program and Israel
2002-2012

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Sources: Various, compiled by CRS.

Preliminary Considerations Regarding an Israeli
Decision71
Nature of the Threat—Differing Stated Perceptions
The question of whether a nuclear-weapons-capable Iran will or will not pose an existential threat
to Israel has become an important debate among Israeli leaders. Some Israeli officials express
concerns, based on Iranian leaders’ long-standing pronouncements against the existence of
Israel,72 that Iran might seek to use a nuclear weapon against Israel even if faced with the
prospect of near-certain retaliation73 from Israel’s presumed but officially undeclared nuclear
arsenal.74 In a 2010 interview, Israeli Prime Minister Binyamin Netanyahu was quoted as saying:
Iran has threatened to annihilate a state. In historical terms, this is an astounding thing. It’s a
monumental outrage that goes effectively unchallenged in the court of public opinion….

71
Prepared by (name redacted), Specialist in Middle Eastern irs,
Affawith contributions from (name redacted), Specialist
in Middle Eastern Affairs and (name redacted), Analyst in Nonproliferation.
72
Israeli official and public discourse regularly refers to many of these actual and alleged pronouncements. Ayatollah
Ruhollah Khomeini, leader of Iran’s Islamic Revolution, decreed that the elimination of a Zionist regime in Israel was a
religious duty. His successor as supreme leader, Ayatollah Ali Khamene’i, has repeatedly referred to Israel as a
“cancerous tumor” since his accession in 1989, including in a rare Friday sermon at a Tehran mosque in February 2012.
Elected President Mahmoud Ahmadinejad quoted Khomeini when he made a remark in October 2005 that was widely
translated in Israel and Western countries as expressing the hope that Israel would eventually be “wiped off the map,”
though some analysts have claimed that a more accurate translation was “this regime occupying Jerusalem must vanish
from the page of time.” Juan Cole, “Hitchens the Hacker; And, Hitchens the Orientalist; And, ‘We don’t Want Your
Stinking War!’”, Informed Comment, May 3, 2006. Ahmadinejad also has reportedly described the Holocaust as a
“myth” used as a pretext to create an “artificial Zionist regime.” In a March 2012 CNN interview, an advisor to
Khamene’i said that Ahmadinejad’s comments were “definitely not” meant in a military sense and that such an
approach was not “a policy of Iran.” “Top Iran official calls for cooperation from West in return for ‘transparency,’”
CNN, March 15, 2012.
73
Ali Akbar Hashemi Rafsanjani, a former Iranian president (1989-1997), said in a December 2001 speech, “If one
day, the Islamic world is also equipped with weapons like those that Israel possesses now, then the imperialists’
strategy will reach a standstill because the use of even one nuclear bomb inside Israel will destroy everything.
However, it will only harm the Islamic world. It is not irrational to contemplate such an eventuality.” Translation by
BBC Global Monitoring of Rafsanjani’s Jerusalem Day speech (from Farsi) in Tehran, December 14, 2001, as carried
by Voice of the Islamic Republic of Iran, available at
http://www.globalsecurity.org/wmd/library/news/iran/2001/011214-text.html. However, Iranian officials, including
Ahmadinejad, have made the case that Iran does not have a history of aggression. For example, in 2006, Javad Zarif,
then Iran’s permanent representative to the United Nations, said, “Our history, in the past 250 years, we have not
attacked any other country. We have been the subject of invasion; we have been the subject of aggression; we have
been the subject of use of chemical weapons. But we have defended ourselves, but we never resorted to use of chemical
weapons, even in retaliation. So our record is very clear. On the other hand, unfortunately, Israel has a record of
aggression against its neighbors, has a known nuclear stockpile, is not a member of any international instrument.”
Transcript of PBS Newshour, April 28, 2006.
74
Israel is not a party to the NPT and maintains a policy of “nuclear opacity” or amimut. A consensus among media
and analysts’ reports is that Israel possesses an arsenal of 80 to 200 nuclear weapons, although some suggest a higher
figure. See, for example, International Institute for Strategic Studies, Nuclear programmes in the Middle East: In the
shadow of Iran, May 2008, p. 133.

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Iranian leaders talk about Israel’s destruction or disappearance while simultaneously creating
weapons to ensure its disappearance.75

Other leading Israeli officials and analysts—including Defense Minister Ehud Barak and Tamir
Pardo, director of Israel’s Mossad intelligence agency—generally avoid characterizing the threat
from Iran as existential at least partly because they claim that Israel “is a strong state and it could
protect itself under any circumstances.”76 According to three Israeli analysts, including a former
deputy national security advisor, whether or not Iran will behave as a “rational actor” has
“become an important dimension of the Israeli debate about a nuclear Iran.”77
Yet, even some Israeli officials who generally avoid characterizing the threat of a nuclearweapons-capable Iran as existential describe it as still presenting unacceptably high risks. They
express concern that a nuclear Iran would compromise traditional Israeli security doctrine and
practices—based on principles of self-reliance and maintaining overwhelming military
superiority—and lead to an unacceptable level of national security uncertainty. This in turn would
fundamentally damage the quality of life and psychological sense of safety that Israelis deem
critically important to their country’s continued viability as a Jewish national home.78 According
to a March 2012 article in Israel’s Jerusalem Report, “Even if the Iranians don’t use the bomb,
[Netanyahu] fears the very fact that they have it could lead to a mass exodus of Jews from an
Israel under nuclear threat, weakening the state and compromising the Zionist dream.”79
Some Israelis worry that even if Iran did not attack Israel with a nuclear weapon, mere possession
of a weapon or the capability to assemble one quickly would make it more difficult to deter Iran
from pursuing greater regional influence and amplifying threats to Israeli security through proxies
and allies—the Lebanese Shiite group Hezbollah, Hamas and other Palestinian militants in Gaza,
and possibly even the beleaguered Asad regime in Syria. Some in Israel, however, argue that Iran
might be limited in its ability to use a potential nuclear weapons capability to thwart conventional
Israeli military action against regional threats.80 Analysts discuss a range of other possible
regional reactions that would undermine Israeli security, including less willingness of Gulf Arab
states to oppose Iranian ambitions; the possibility of proliferation in countries such as Egypt,
Turkey, and Saudi Arabia; and perhaps international pressure on Israel either to declare its nuclear
weapons status or consider giving it up if Iran would do the same.81
75

Goldberg, “Point of No Return,” op. cit.
Avner Cohen, “Israel ponders a nuclear Iran,” Bulletin of the Atomic Scientists (Web edition), August 17, 2010. See
also Barak Ravid, “Mossad chief: Nuclear Iran not necessarily existential threat to Israel,” Ha’aretz, December 29,
2011. A February 2012 Center for Strategic and International Studies (CSIS) report stated, “In actual practice, Israel
can already deliver an ‘existential’ nuclear strike on Iran, and will have far more capability to damage Iran than Iran is
likely to have against Israel for the next decade.” Cordesman and Wilner, op. cit. The Washington Post has written that
President Obama “has declined to call on Israeli leaders to declare [its nuclear] program, a source of frustration and fear
in the Middle East.” Scott Wilson, “Obama to urge Israel’s patience,” Washington Post, March 3, 2012.
77
Shai Feldman, Shlomo Brom, and Shimon Stein, “What to Do About Nuclearizing Iran? The Israeli Debate,”
Brandeis University, Crown Center for Middle East Studies Brief No. 59, February 2012.
78
Haim Malka, Crossroads: The Future of the U.S.-Israel Strategic Partnership, Center for Strategic and International
Studies, 2011, pp. 58-59; Kaye, et al., op. cit., pp. 37, 52-53.
79
Susser, op. cit.
80
Stein, et al., “The Public Discussion of Israel’s Strategy Regarding a Nuclear Iran,” op. cit.
81
Kaye, et al., op. cit., pp. 27-28; Cohen, op. cit.; Shimon Stein, Shai Feldman, and Shlomo Brom, “The Public
Discussion of Israel’s Strategy Regarding a Nuclear Iran,” Institute for National Security Studies Insight No. 310,
January 31, 2012. Israel has expressed support for a WMD-free zone in the Middle East, but has asserted that other
regional countries should reconcile themselves to Israel’s existence before negotiating such a zone. Sha’ul Horev,
(continued...)
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Israelis continue to debate whether the risks of a nuclear-weapons-capable Iran outweigh the risks
of a strike that most assessments doubt would definitively end Iran’s nuclear program (see “Effect
on Iran’s Nuclear Program” below). According to one Israeli report, “Netanyahu faces one of the
most difficult choices any Israeli prime minister has had to contemplate. A strike against Iran’s
nuclear facilities could lead to regional conflagration, tens of thousands of missiles and rockets
raining down on Israeli population centers and war on several fronts. But with no attack, Iran
could go nuclear on his watch.”82 Unlike the wide range of views expressed among U.S. and
international analysts about whether a nuclear-weapons-capable Iran might or might not be
contained, based on concepts and experiences dating from the Cold War, Israeli officials—
according to a 2011 RAND Corporation report—appear to be “reluctant to address futures
involving a nuclear-armed Iran, as they [want] to maintain the focus on preventing such an
outcome.”83 Some Israeli analysts have, however, contemplated the prospects for mutual
deterrence between Israel and Iran, including some who collaborated on the subject in a 2008
memorandum published by Israel’s Institute for National Security Studies (INSS), under the
assumption that Iran might not be prevented from acquiring a nuclear weapons capability. One
article from this memorandum questioned whether Cold War-era containment would be
applicable:
The fact that since Hiroshima and Nagasaki no nuclear device has been used in the course of
hostilities might lead to the tentative conclusion that a third use of a nuclear weapon in war is
of very low probability. This conclusion is based on the superpowers relationship during the
Cold War—the only historical example of a relatively stable and long nuclear deterrence
balance. But would this pattern recur in various regional nuclear conflicts?84

Despite Israelis’ general reluctance to discuss containment scenarios, some Israeli public figures
are less expansive in their characterization of the inherent risks of a potentially nuclear-armed
Iran. In the words of one analyst:
If and when there was a clear Iranian threat to attack Israel, then Israel could launch a
preemptive assault. And if no such threat ever materializes, Israel need never attack. Any
(...continued)
Director General of Israel’s Atomic Energy Commission, explained the government’s position in September 2009, “It
is our vision and policy, to establish the Middle East as a mutually verifiable zone free of weapons of mass destruction
and their delivery systems. We have always emphasized, that such a process, through direct negotiations, should begin
with confidence building measures. They should be followed by mutual recognition, reconciliation, and peaceful
relations. Consequently conventional and non-conventional arms control measures will emerge ... In our view, progress
towards realizing this vision cannot be made without a fundamental change in regional circumstances, including a
significant transformation in the attitude of states in the region towards Israel.” Statement by Dr. Sha’ul Horev,
Director General, Israel Atomic Energy Commission, to the 53rd General Conference of the International Atomic
Energy Agency, September 2009, Israel Atomic Energy Commission, September 15, 2009.
82
Susser, op. cit.
83
Kaye, et al., op. cit., p. 47.
84
Yair Evron, “An Israel-Iran Balance of Nuclear Deterrence: Seeds of Instability,” Israel and a Nuclear Iran:
Implications for Arms Control, Deterrence, and Defense, INSS Memorandum No. 94, July 2008. For an Israeli
perspective on whether missile defense systems could effectively deter a “rational” Iran, see Uzi Rubin, “Missile
Defense and Israel’s Deterrence against a Nuclear Iran,” from the same memorandum. In February 2012, Louis René
Beres, a Purdue University professor with significant past involvement in assisting Israel formulate national security
strategy, co-authored an essay that said, “Perhaps a nuclear Iran can still be prevented by preemption. But in the more
likely absence of any remaining options for ‘anticipatory self-defense,’ Israel’s best available stance will be to
effectively deter an already-nuclear Iran.” Louis René Beres and General (USAF ret.) John T. Chain, “Israel and Iran at
the eleventh hour,” Oxford University Press Blog, February 23, 2012.

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future Iran-Israel war will happen if Iran’s regime makes it unavoidable, not in theory but in
actual practice.85

Possible “Zone of Immunity” and Israel’s Ability to Act
Independently
Long-standing Israeli national security doctrine emphasizes Israel’s prerogative to “defend itself,
by itself.” In a January 24, 2012, speech in the Knesset, Prime Minister Netanyahu said, in
reference to the Iranian nuclear issue, “In the end, with regard to threats to our very existence, we
cannot abandon our future to the hands of others. With regard to our fate, our duty is to rely on
ourselves alone.”86
In a November 2011 CNN interview, Israeli Defense Minister Ehud Barak appeared to set forth
parameters for Israel’s ability to act independently when he said that the window of opportunity
for a preventive strike to stop or slow Iran’s progress toward nuclear weapons capability could
close within nine months. He explained that the Iranians could enter a “zone of immunity” from
military action “by widening [the] redundancy of their plan, making it spread over many more
[sites], with many more elements.”87 As evidence of his claim that Iran is progressing toward a
zone of immunity, Barak has cited Iran’s ongoing movement of enriched uranium and/or uranium
enrichment centrifuges into the supposedly difficult-to-attack Fordow facility.88
It is unclear whether Israeli leaders’ willingness to make policy decisions in line with the zone of
immunity concept explained by Barak might be affected by the views of U.S. military planners
who reportedly question the imminence of Iran achieving such a zone.89 According to a February
2012 New York Times article, a senior Obama Administration official who has discussed the
concept with Israelis says that “‘there are many other options’ to slow Iran's march to a completed
weapon, like shutting off Iran’s oil revenues, taking out facilities that supply centrifuge parts or
singling out installations where the Iranians would turn the fuel into a weapon.”90
The concept Barak has articulated may anticipate that Iran would consider using IAEA-monitored
and -safeguarded enrichment facilities at Fordow to produce weapons-grade enriched uranium.
Although it is unclear how Iran may act, there is no precedent for an NPT party to use declared
facilities to produce fissile material for nuclear weapons.91 If weapons-grade enrichment were to
85

Barry Rubin, “Israel Isn’t Going to Attack Iran and Neither Will the United States,” PJ Media, January 26, 2012.
Transcript of English translation (from Hebrew) available on Israeli Prime Minister’s Office website.
87
Transcript of remarks by Ehud Barak on CNN’s Fareed Zakaria GPS, November 20, 2011. According to one report,
“Iran has announced plans for 10 new enrichment sites—further dispersing later-generation centrifuges in places
smaller, harder to locate and easier to harden.” Karl Vick, “Can Israel Stop Iran’s Nuke Effort?”, Time, February 6,
2012.
88
“Israel and Iran: Closer to take-off,” Economist, February 11, 2012. A report dated February 24, 2012, from IAEA
Director-General Yukiya Amano said that Iran began using the site in December 2011 to enrich uranium up to 20%
uranium-235. Iranian officials have stated that this uranium will be used as fuel in nuclear reactors to produce medical
isotopes. “Iran Plans Several New Nuclear Reactors,” PressTV, April 12, 2011.
89
Joby Warrick, “Iran’s underground nuclear sites not immune to U.S. bunker-busters, experts say,” Washington Post,
March 1, 2012.
90
Mark Landler and David E. Sanger, “U.S. and Israel Split on Speed of Iran Threat,” New York Times, February 8,
2012.
91
North Korea used plutonium instead of uranium-enriching centrifuges to provide fissile material for its nuclear
weapons program and announced its withdrawal from the NPT in 2003, “two years before announcing that it had the
(continued...)
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occur at Fordow or Natanz under IAEA safeguards (assuming that Iran was cooperating with the
IAEA), the international community would probably learn of it because of the difficulty in
diverting significant amounts of nuclear material from safeguarded centrifuge facilities without
detection.92
To put the current Israeli debate into context, one report has claimed that Barak’s “zone of
immunity” warning did not mark “the first time that the Israelis have invented a phrase that
suggests a hard deadline before an attack. At the end of the Bush administration, they said they
could not allow Iran to go past ‘the point of no return.’ That phrase was also ill-defined, but
seemed to suggest that once Iran had the know-how and the basic materials to make a bomb, it
would be inevitable.”93 In that case, and in the current case as well, some observers have
expressed opinions that the timetables are mainly intended to intimidate Iran and to prod the
United States and other international actors into taking tougher and more urgent action.94
The issue of Israeli independent action is linked to U.S. attitudes and decisions. According to
multiple sources, including the following excerpt from a February 2012 article, Israeli leaders
have not been satisfied with U.S. responses to their attempts to obtain assurances that the United
States would use force against Iran if non-military measures are deemed insufficient:
One former Israeli official tells Newsweek he heard this explanation directly from Defense
Minister Ehud Barak. “If Israel will miss its last opportunity [to attack], then we will have to
lean only on the United States, and if the United States decides not to attack, then we will
face an Iran with a bomb,” says the former Israeli official. This source says that Israel has
asked Obama for assurances that if sanctions fail, he will use force against Iran. Obama’s
refusal to provide that assurance has helped shape Israel’s posture: a refusal to promise
restraint, or even to give the United States advance notice.95

It is unclear whether the Israelis might be willing to reconsider this posture in the wake of
Netanyahu’s meeting with President Obama and other U.S. officials in March 2012. Amos Yadlin,
a former head of Israeli military intelligence and one of the Israel Air Force pilots who carried out
the 1981 Osirak strike, has been quoted as saying, “The US has promised not to allow Iran to
have the bomb, but can Israel rely on this promise? That is the key to what Israel may decide to
do.”96

Military Action Versus Alternative Courses of Action
It is unclear how Israeli officials might react to Obama Administration efforts to convince them to
give more time for sanctions with increasingly broad multilateral support to take fuller effect
before elevating military options to the fore.97 An Israeli investigative reporter quoted a “very
(...continued)
bomb and three years before testing one.” “Attacking Iran: Up in the air,” Economist, February 25, 2012.
92
Colin H. Kahl, “An Israeli strike on Iran would backfire,” Washington Post, March 4, 2012.
93
Landler and Sanger, op. cit.
94
Tobias Buck, “Israel debate on Iran strike gains urgency,” Financial Times, February 3, 2012.
95
Klaidman, et al., op. cit. See also “Israel wouldn't warn U.S. before Iran strike, says intelligence source,” Associated
Press, February 28, 2012; Bergman, “Will Israel Attack Iran?”, op. cit.
96
Susser, op. cit.
97
Klaidman, et al., op. cit.

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senior Israeli security source” as saying that “Americans tell us there is time, and we tell them
that they only have about six to nine months more than we do and that therefore the sanctions
have to be brought to a culmination now, in order to exhaust that track.”98
In late 2011 and early 2012, the United States and the European Union (EU) imposed sanctions—
due to take effect in June and July, respectively—aimed directly at Iran’s export of crude oil,
which accounts for around 70% of its hard currency revenue.99 Many Israeli officials
acknowledge that sanctions have begun to significantly affect Iran’s economy.100 That effect could
be compounded following the March 2012 expulsion by the Brussels-based SWIFT (Society for
Worldwide International Financial Transfers) of all Iranian banks blacklisted by the EU from its
electronic transfer system. It is not clear, however, how a sustained, intensifying economic impact
on the Iranian regime and its people could affect the regime’s behavior or policy, including with
regard to a possible return to international diplomacy.101 In early March, the “P5+1” (United
States, United Kingdom, France, Germany, China, and Russia) accepted Iran’s proposal to restart
negotiations in the spring of 2012 on its nuclear program. Israeli Vice Prime Minister and
Strategic Affairs Minister Moshe Ya’alon was quoted as saying in March that the spring 2012
talks between Iran and the P5+1 would show “if there is a chance that the sanctions are working
or that the Iranians are continuing to manoeuvre and advance toward a military nuclear
capability.”102
It is also unclear to what extent Israelis believe that their alleged ongoing covert action or “secret
war” against Iran’s nuclear program103 might mitigate the need for an air strike. The two most
recently retired heads of the Mossad, Meir Dagan and Ephraim Halevy, have both publicly stated
that an Israeli military strike against Iran’s nuclear facilities would be counterproductive, partly
because they both reportedly “believe sabotage and diplomacy have done much to set back Iran’s
nuclear ambitions and can do more yet.”104 Dagan has been quoted as saying, “The Iranian
problem must be shaped as an international problem, and efforts to delay Iran's nuclear program
should continue.”105 In March 2012, Vice Prime Minister Ya’alon was quoted as saying, when
asked if Israel might be just weeks away from a strike on Iran, “No. Look, we have to see. The
[Iranian nuclear] project is not static…. Sometimes there are explosions, sometimes there are
98

Bergman, “Will Israel Attack Iran?”, op. cit.
For more information on Iran sanctions and their effects, see CRS Report RS20871, Iran Sanctions, by (name re
dacted).
100
Buck, op. cit.
101
For two U.S. perspectives on this question, see Dennis B. Ross, “Iran is Ready to Talk,” New York Times, February
14, 2012; Gerald F. Seib, “Iran Is Becoming Election Wild Card,” Wall Street Journal, February 28, 2012.
102
Dan Williams, “Israel says sabotage may stretch Iran atom timeline,” Reuters, March 27, 2012.
103
Melman, “The war against Iran’s nuclear program has already begun,” op. cit.
104
Bruce Riedel, “The Israeli Anti-Attack-Iran Brigade,” The Daily Beast, November 7, 2011.
105
Quote from Israeli newspaper Yedioth Ahronoth translated in “Former Mossad chief against Iran strike,” United
Press International, May 8, 2011. An Israeli analyst has suggested a wider array of options short of a preemptive strike:
“As the Iranian regime works hard to get nuclear weapons and missiles capable of carrying them, Israel uses the time to
build a multi-level defensive and offensive capability. These layers include: U.S. early warning stations and antimissile missile installations in the Gulf; Israeli missile-launching submarines; Israeli long-range planes whose crews
have rehearsed and planned for strikes at Iranian facilities; different types of anti-missile missiles capable of knocking
down the small number of missiles Iran could fire simultaneously; covert operations, possibly including computer
viruses and assassinations, to slow down Iran’s development of nuclear weapons; improved intelligence; help to the
Iranian opposition (though the idea of “regime change” in the near future is a fantasy); and other measures.” Rubin, op.
cit.
99

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worms there, viruses, all kinds of things like that.”106 However, according to one report from an
Israeli investigative journalist, some senior Israeli military intelligence officials believe that—as
was the case with Iraq’s nuclear program in the late 1970s/early 1980s—possible Mossad actions
have not stopped Iran’s progress toward nuclear weapons capability.107

106
107

Ya’alon quoted and translated from Israel’s Army Radio in Williams, op. cit.
Bergman, “Will Israel Attack Iran?”, op. cit.

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The Israeli Decisionmaking Process108
Several factors may influence any Israeli political decision relating to a possible strike on Iranian
nuclear facilities. These include, but are not limited to, the views and interactions of Israeli
decisionmakers; the public debate in Israel,
the stances and anticipated responses of U.S.,
The Security Cabinet and “Octet”
regional, and international actors; estimates of
Israel’s security cabinet is the group of government
the effects of a possible strike; and the
ministers convened by the prime minister to make
decisions on matters related to national security.109 The
anticipated Iranian response regionally and
prime minister can have outside security and military
internationally.
Discussion below regarding the Israeli
decisionmaking process and the factors that
may influence it is largely dependent on
secondary sources that CRS does not claim to
confirm independently.

Decisionmakers: Views and
Interactions
According to one report, the issue of a
possible Israeli strike on Iran has “sparked
fierce public debate in Israel among political
and military leaders, past and present, dividing
cabinet ministers, generals and Mossad chiefs.
Most see military action as a last resort to be
contemplated only if sanctions and diplomacy
fail; others insist that bombing Iran could
actually stabilize the Middle East by setting
back the radical cause indefinitely.”111

officials brief the group. Prime ministers also rely upon
security cabinet majorities to confirm broad-based
support within Israel’s coalition-based parliamentary
democracy for important courses of action.

During the tenure of this government, Prime Minister
Netanyahu has tended to convene and rely upon the
opinions of a smaller group of eight ministers within the
security cabinet, known as the “octet,” perhaps partly
due to concerns that larger groups are more prone to
leaking information publicly.110
Current security cabinet (first eight comprise octet)
Binyamin Netanyahu (Prime Minister)
Ehud Barak (Defense Minister/Deputy PM)
Avigdor Lieberman (Foreign Minister/Deputy PM)
Moshe Ya’alon (Vice PM/Strategic Affairs Minister)
Yuval Steinitz (Finance Minister)
Eli Yishai (Interior Minister/Deputy PM)
Dan Meridor (Intel. & Atomic Ener. Min./Dep. PM)
Benny Begin (Minister without Portfolio)
Silvan Shalom (Vice PM/Regional Dev. Minister)
Yitzhak Aharonovitch (Internal Security Minister)
Yaakov Ne’eman (Justice Minister)
Gideon Sa’ar (Education Minister)
Uzi Landau (National Infrastructure Minister)
Ariel Atias (Housing & Construction Minister)

A 2011 RAND Corporation report cited a
former Israeli official as saying that “the majority of ministers currently in power (including
Prime Minister Netanyahu) would support military action to avoid Iran’s acquiring a bomb under
108

Prepared by (name redacted), Specialist in Middle Eastern Affairs.
A February 2012 report quoted Israeli Vice Prime Minister and Strategic Affairs Minister Moshe Ya’alon as saying,
“In the State of Israel, any process of a military operation, and any military move, undergoes the approval of the
security cabinet and in certain cases, the full cabinet.” Jeffrey Heller and Dan Williams, “Prime Minister Netanyahu
can’t fly solo in Israel to attack Iran,” Reuters, February 7, 2012. The security cabinet of Menachem Begin reportedly
elected to carry out the 1981 strike on Iraq’s Osirak nuclear reactor over the objections of the then Mossad director, and
the security cabinet of Ehud Olmert reportedly supported the 2007 strike against Syria’s presumed nuclear reactor
under construction at Al Kibar (near Deir al Zur) by a vote of 13-1. For additional information on how the
decisionmaking process on Iran might proceed under Prime Minister Netanyahu, see a transcript of an interview with
the former director-general of Netanyahu’s office in Dovid Efune, “On Iran and Obama, How Bibi will Decide –
Exclusive Interview with Eyal Gabbai, Part 1” The Algemeiner, March 5, 2012.
110
Eli Lake, “Meet the Israeli ‘Octet’ That Would Decide an Iran Attack,” Daily Beast, March 9, 2012.
111
Susser, op. cit.
109

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their watch.”112 However, an Israeli journalist known for covering intelligence issues wrote in
February 2012 that “as [former Mossad chief Meir] Dagan, the majority of Israeli Cabinet
ministers, the CIA, and others have made clear, there is no need to strike in the near future since
there is still time before Iran produces its first bomb.”113
In a January 2012 interview, Defense Minister Barak indicated that there were “three categories
of questions, which he characterized as ‘Israel’s ability to act,’ ‘international legitimacy’ and
‘necessity,’ all of which require affirmative responses before a decision is made to attack:”
1. Does Israel have the ability to cause severe damage to Iran’s nuclear sites and bring about
a major delay in the Iranian nuclear project? And can the military and the Israeli people
withstand the inevitable counterattack?
2. Does Israel have overt or tacit support, particularly from America, for carrying out an
attack?
3. Have all other possibilities for the containment of Iran’s nuclear threat been exhausted,
bringing Israel to the point of last resort? If so, is this the last opportunity for an attack?114

Whether Israel’s leaders believe the answer is “yes” or “no” to each of these three questions is a
subject of debate among U.S. and Israeli analysts. A January 2012 New York Times article stated
that
conversations with eight current and recent top Israeli security officials suggested several
things: since Israel has been demanding the new sanctions, including an oil embargo and
seizure of Iran’s Central Bank assets, it will give the sanctions some months to work; the
sanctions are viewed here as probably insufficient; a military attack remains a very real
option; and [post-attack] situations are considered less perilous than one in which Iran has
nuclear weapons.115

In Israeli policymakers’ evaluation of post-attack situations, however, one Israeli analyst asserted
in February 2012 that they are so focused on the “immediate military implications” that they
are ignoring several of the potential longer-term aspects of a strike: the preparedness of
Israel’s home front; the contours of an Israeli exit strategy; the impact on U.S.-Israel
relations; the global diplomatic fallout; the stability of world energy markets; and the
outcome within Iran itself. Should Israel fail to openly debate and account for these factors in
advance of an attack, it may end up with a strategic debacle, even if it achieves its narrow
military goals.116

Israeli sources indicate that top leaders are divided on the issue. One journalist asserted in
February that Netanyahu’s and Barak’s apparent support for an attack in the near future is
countered by many cabinet ministers and security establishment officials who supposedly share
former Mossad chief Dagan’s perspective “against a strike and in favor of sanctions and covert
operations.” That view is based at least partly on doubts about Israel’s military capability to set
112

Kaye et al., op. cit., p. 40.
Yossi Melman, “Face Off,” Tablet, February 9, 2012.
114
Bergman, “Will Israel Attack Iran?”, op. cit.
115
Ethan Bronner, “Israel Senses Bluffing in Iran’s Threats of Retaliation,” New York Times, January 26, 2012.
116
Ehud Eiran, “What Happens After Israel Attacks Iran,” foreignaffairs.com, February 23, 2012.
113

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back Iran’s nuclear program three to five years.117 According to a November 2011 article by
another Israeli journalist:
Benny Begin and Moshe Yaalon, two of the most hardline right-wing ministers in the “Octet
Forum,” the Israeli Cabinet’s main decision-making body, are currently opposed to an attack
because they believe a military strike will cause a massive backlash from Iran and its proxies
and should only be a very last resort.118

According to the same article, “Netanyahu’s decision to replace Dagan [in early 2011]—coupled
with Barak’s insistence on removing popular army chief [Gabi] Ashkenazi in February [2011]—
was seen by many as an intentional strategy to remove opponents of a military strike on Iran from
positions of influence.”119 In June 2011, the New York Times quoted Dagan as saying, “I decided
to speak out because when I was in office, [former Israel Security Agency (Shin Bet) director
Yuval] Diskin, Ashkenazi and I could block any dangerous adventure. Now I am afraid that there
is no one to stop Bibi [Netanyahu] and Barak.”120 Despite changeovers in top Israeli security
positions, an Israeli military correspondent was quoted as claiming in February 2012 that the
current Israel Defense Forces Chief of Staff, Lieutenant General Benny Gantz, is considered a
leader of a school of thought within the security establishment that reportedly has not concluded
that the time has come for military action.121 One report cited a former senior Israeli official as
saying that the defense establishment “was not enthusiastic about an attack. It hoped that
sanctions and diplomacy would work and that if military action were needed it would come from
the United States.”122
It is unclear how influential security officials’ views would be in a decision on a strike. When an
interviewer told Barak in January 2012 about top-ranking military personnel who argue that a
military strike is either unnecessary or would be ineffective, Barak said, “It’s good to have
diversity in thinking and for people to voice their opinions. But at the end of the day, when the
military command looks up, it sees us—the minister of defense and the prime minister. When we
look up, we see nothing but the sky above us.”123 In mid March 2012, one report quoted an Israeli
journalist as writing that a slight majority of Israel’s security cabinet supports a strike:
According to the most recent assessments, at this point eight ministers tend to support
Netanyahu and Barak’s position, while six object to it. It should be noted that the security

117

Melman, “Face Off,” op. cit.
Anshel Pfeffer, “Will They?”, Tablet, November 18, 2011. Israeli reports in early November 2011 about other
“octet” members said that Foreign Minister Avigdor Lieberman had been convinced to support a strike on Iran, while
Intelligence and Atomic Energy Minister Dan Meridor objected to an “immediate attack” and Interior Minister Eli
Yishai had not made up his mind. Barak Ravid, et al., “Netanyahu trying to persuade cabinet to support attack on Iran,”
Ha’aretz, November 2, 2011; Ari Shavit, “Decision to attack Iran must be made with a clear mind,” Ha’aretz,
November 3, 2011.
119
Pfeffer, “Will They?”, op. cit. However, Dagan was one of the longest-serving Mossad directors (2002-2011),
having had his term extended multiple times following his initial appointment, including once by Netanyahu.
120
Ethan Bronner, “A Former Spy Chief Questions the Judgment of Israeli Leaders,” New York Times, June 3, 2011.
121
Ha’aretz journalist Amir Oren, quoted in Vita Bekker, “US worries grow over Israeli strike on Iran,” The National
(United Arab Emirates), February 20, 2012.
122
Bronner, “Israel Senses Bluffing in Iran’s Threats of Retaliation,” op. cit.
123
Bergman, “Will Israel Attack Iran?”, op. cit.
118

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cabinet has yet to hold a decisive meeting on the issue and the assessments are based on
secret talks being held between the prime minister and his ministers, one at a time.124

Another mid March Israeli report claimed that “if Netanyahu and Minister of Defense, Ehud
Barak, decide to attack, they'll be able to pass a decision through the cabinet without significant
difficulty. With the exception of ministers Benny Begin and Dan Meridor, a tenacious objection
against an Israeli strike on Iran is not expected.”125
Some Israeli analysts question whether Netanyahu is likely to launch a strike against Iran. He has
not ordered a major military offensive during either of his stints as Israel’s prime minister (19961999 and 2009-present), possibly owing in part to what some analysts have observed to be a
generally cautious approach to decisionmaking.126 In his meeting with President Obama at the
White House on March 5, 2012, Netanyahu reportedly confirmed that no decision had been made
to that point.127
Yet, speaking at the annual American Israel Public Affairs Committee (AIPAC) conference in
Washington, DC, on March 5, 2012, Netanyahu said:
We’ve waited for diplomacy to work. We’ve waited for sanctions to work. None of us can
afford to wait much longer. As Prime Minister of Israel, I will never let my people live under
the shadow of annihilation. Some commentators would have you believe that stopping Iran
from getting the bomb is more dangerous than letting Iran have the bomb. They say that a
military confrontation with Iran would undermine the efforts already underway, that it would
be ineffective, and that it would provoke even more vindictive action by Iran.

Netanyahu then referred to correspondence in 1944 between the World Jewish Congress and the
U.S. government that apparently indicated U.S. unwillingness to bomb Auschwitz because of the
“doubtful efficacy” of the operation and the possibility of “even more vindictive action by the
Germans.” In response to Netanyahu’s speech, the editor-in-chief of Israel’s Ha’aretz newspaper
wrote:
The Holocaust talk has but one meaning—forcing Israel to go to war and strike the
Iranians…. No amount of missiles falling on Tel Aviv, rising oil prices and economic crises
matter when compared to genocide…. Enough loopholes can be detected that would allow
Netanyahu to escape an imminent decision to go to war…. Nevertheless, Netanyahu took on
a public obligation on Monday that would make it very hard for him to back away from the
path of war with Iran.128

124

Excerpt from article by Ben Caspit in Israel’s Hebrew-language Ma’ariv newspaper, translated and quoted in “Most
of Israel security cabinet backs Iran strike,” Agence France Presse, March 15, 2012.
125
Amir Rapaport, “Who Opposes Attacking Iran,” Israel Defense, March 16, 2012. For a report detailing the
relationship between Netanyahu and Barak and their interaction on this issue, see Ethan Bronner, “2 Israeli Leaders
Make Iran Issue Their Own,” New York Times, March 27, 2012.
126
CRS telephone interview with former Israeli deputy national security advisor and military planning director Brig.
Gen. (ret.) Shlomo Brom, February 21, 2012. Daniel Levy, “Netanyahu Won’t Attack Iran (Probably),”
foreignpolicy.com, March 2, 2012.
127
Barak Ravid, “Netanyahu tells Obama: I have yet to decide whether to attack Iran,” Ha’aretz, March 6, 2012.
128
Aluf Benn, “By conjuring the Holocaust, Netanyahu brought Israel closer to war with Iran,” haaretz.com, March 6,
2012.

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In early March 2012 interviews on Israeli television following his Washington, DC, trip,
Netanyahu reportedly said:
This is not a matter of days or weeks. It is also not a matter of years. The result has to be that
the threat of a nuclear weapon in Iran’s hands is removed…. If you don’t make the decision,
and you don’t succeed in preventing it, who will you explain that [to]? To historians? To the
generations that were here before us? To the generations that won’t come after us? It is
forbidden to let the Iranians get nuclear arms. And I intend not to allow that to happen.129

Public Opinion and Debate in Israel
A U.S.-based Israeli analyst has noted that domestic Israeli political factors might militate against
Netanyahu undertaking the risks a strike would entail—including his coalition’s apparently strong
prospects for reelection in 2012 or 2013, and a reported lack of pressure for military action on
Iran from the public or from coalition partners seen as having generally hawkish views.130 Public
opinion polls conducted in February and March 2012 indicated reluctance by a majority of
Israelis to support an attack on Iranian nuclear facilities in the absence of U.S. cooperation.
Assuming an Israeli attack without U.S. cooperation, a mid March poll conducted jointly by
Israeli and Palestinian organizations indicated that Israelis would oppose a strike by a 51%-42%
margin. A sizeable majority, however, would apparently support an attack with U.S. cooperation
by a 69%-26% margin.131 An Israeli political science professor involved with a late February poll
on the same questions reportedly explained the Israeli views as follows: “They are not
challenging the right to [attack], [they are] challenging the ability to do it effectively and with
international support. People don’t want Israel to become the troublemaker of the world.”132
A public debate in which Israeli officials and non-government analysts might engage appears to
be a controversial subject in its own right. According to one report, “No issue in Israel is more
fraught than the debate over the wisdom and feasibility of a strike on Iran…. Security officials are
increasingly kept from journalists or barred from discussing Iran. Much of the public talk is as
much message delivery as actual policy.”133 In a November 2011 poll taken by Israel’s Dialog
polling institute, Israelis indicated by a 51%-39% margin that they oppose public discussion of a
possible attack because it could “cause damage.”134
129
Prime Minister Netanyahu quoted in Herb Keinon, “Netanyahu: Attack on Iran not immediately in offing,”
jpost.com, March 8, 2012.
130
Levy, op. cit. See also Paul Pillar, “Why Israeli Public Opinion Opposes a Strike on Iran,” theatlantic.com, March 1,
2012.
131
Poll of 600 adult Israelis during the period of March 11-15, 2012, conducted by the Harry S. Truman Research
Institute for the Advancement of Peace at the Hebrew University of Jerusalem and the Palestinian Center for Policy and
Survey Research in Ramallah, West Bank. Details of the poll, which has a margin of error of 4.5%, are available at
http://www.pcpsr.org/survey/polls/2012/p43ejoint.html. A late February poll conducted by Israel’s Dahaf Institute
indicated that Israelis would oppose a strike without U.S. cooperation by a 63%-31% margin, and support a strike with
U.S. cooperation by a 62%-34% margin. See http://www.peaceindex.org/indexMonthEng.aspx?num=240#anchor269.
A poll taken by Israel’s Dialog polling institute in early March indicated only 26% support for an independent Israeli
strike. See http://www.imra.org.il/story.php3?id=55988.
132
Tel Aviv University professor Tamar Herrmann, quoted in Joshua Mitnick, “Majority of Israelis oppose a unilateral
strike on Iran nuclear program,” Christian Science Monitor, March 8, 2012.
133
Bronner, “Israel Senses Bluffing in Iran’s Threats of Retaliation,” op. cit.
134
Details of the poll, which has a margin of error of 4.6%, are available at
http://www.imra.org.il/story.php3?id=54362.

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Some Israeli commentators have voiced concern that the public is resigned to the possibility of
war with Iran, based on a tradition of deference to national leaders.135 According to one
commentator, “The impression is that the majority of Israelis are not afraid…. The decision is left
up to a handful of people who have decided that the public, as usual, trusts them blindly,
obediently.”136 An early March 2012 Dialog poll indicated that by a 50%-38% margin Israelis
trust Netanyahu and Barak on the Iran issue.137
Two January 2012 articles co-authored by three Israeli analysts (including two former officials)
argued that “a public discussion will assist those officials who are authorized to make informed
decisions on this issue.”138 Both articles acknowledged the limitations of such a discussion given
the apparent centrality to decisionmakers’ considerations of classified information on Iran’s
nuclear program and on the operational capacity of Israel’s air force. Yet, they still argued for a
debate to proceed:
Instead, the public debate must focus on the strategic dimensions of the issue—a realm in
which civilian strategists have much to contribute. Indeed, airing these dimensions is an
absolute imperative. Without it we are condemned to repeat the mistakes of the past or to
commit worse ones. More important, without such airing we are doomed to step mindlessly
closer and closer to a military confrontation with Iran or, possibly just as dangerous, to
accept and accommodate its nuclear ambitions and designs.139

135
Joel Greenberg, “Sense of inevitable war grips Israel,” Washington Post, February 23, 2012; Larry Derfner, “Israel’s
Silent March to War with Iran,” Jewish Daily Forward, February 10, 2012.
136
Gideon Levy, “Israelis should be afraid of their leaders, not Iran,” Ha’aretz, February 5, 2012.
137
Details of the poll, which has a margin of error of 4.5%, are available at
http://www.imra.org.il/story.php3?id=55988.
138
Stein, et al., “The Public Discussion of Israel’s Strategy Regarding a Nuclear Iran,” op. cit. See also Shlomo Brom,
Shai Feldman, Shimon Stein, “A real debate about Iran,” mideast.foreignpolicy.com, January 30, 2012.
139
Brom, et al., “A real debate about Iran,” op. cit.

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Potential Factors in an Israeli Decision: Stances and
Anticipated Responses Outside Israel140
The United States
Despite the reference by Defense Minister Barak to the possible need for “overt or tacit support,
particularly from America” before approving an Israel strike, it is unclear to what extent Israeli
decisionmakers might be influenced by the stated positions and anticipated responses of U.S.
policymakers in the Obama
Administration and Congress
Selected Polls of U.S.Views on
regarding an attack. Not
Potential Israeli Strike
surprisingly, Israeli leaders are
These poll results are included to provide information regarding U.S.
extremely sensitive to U.S. views
public opinion on the issue, which could impact U.S. policymakers’
for a variety of reasons, including
views and positions and ultimately influence Israeli decisionmaking.
but not limited to:
Reuters/Ipsos Public Affairs (March 8-11, 2012)
•

Strong U.S.-Israel
relations dating back to
when the United States
was the first country to
recognize the provisional
Jewish government as the
de facto government of
Israel upon its declaration
of statehood in May 1948;

•

Robust ongoing military
and security cooperation,
including significant U.S.
arms sales and other forms
of support; and

•

Trade ties and important
bilateral economic and
scientific cooperation.141

Israeli leaders’ perspectives about
the possible effects of a strike on
U.S. political and material
assistance to Israel, possible
negative security consequences for
the United States from a potential
Iranian retaliation, and the
probability of future U.S. military

Do you support or oppose Israel taking military action against Iran if
there is evidence that Iran is building nuclear weapons?
Strongly support: 40%, Somewhat support: 22%, Somewhat oppose:
11%, Strongly oppose: 19%, Neither: 4%, Unsure: 4%
(Poll of 1,084 adults with 3.1% margin of error)
CBS News/New York Times (March 7-11, 2012)
If Israel were to attack Iran in order to prevent it from developing a
nuclear weapons program, should the U.S. support Israel's military
action, or should the U.S. not get involved?
Support: 47%, Not get involved: 42%, Oppose (volunteered response):
1%, Unsure: 10%
(Poll of 1,009 adults with 3% margin of error)
ABC News/Washington Post (March 7-10, 2012)
Would you support or oppose Israel bombing Iran's nuclear
development sites?
Support: 42%, Oppose: 51%, No opinion: 7%
(Poll of 1,003 adults with 4% margin of error)
Program on International Policy Attitudes/University of
Maryland (March 3-7, 2012)
Do you think the U.S. should…
Discourage Israel from attacking Iran’s nuclear program: 34%
Take a neutral stance: 46%
Encourage Israel to attack Iran’s nuclear program: 14%
Don’t know/Refused: 6%
(Poll of 727 Americans with 4.5% margin of error)
The Hill/Pulse Opinion Research (March 1, 2012)
Support or oppose Israel attack on Iran to destroy nuclear program?
Very supportive: 28%, Somewhat supportive: 24%, Somewhat opposed:
22%, Very opposed: 19%, Not sure: 8%
(Poll of 1,000 likely voters with 3% margin of error)

140

Prepared by (name redacted), Specialist in Middle Eastern Affairs.
For more details on these interactions, see CRS Report RL33476, Israel: Background and U.S. Relations, by (nam
e redacted); and CRS Report RL33222,
U.S. Foreign Aid to Israel , by (name redacted).
141

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action to prevent a nuclear-armed Iran may, among other considerations, influence the Israeli
decisionmaking process
An Israeli journalist wrote in March 2012 that Israel did not ask permission when it acted to
prevent Saddam Hussein and Bashar al Asad from obtaining nuclear weapons, but that “the
[Obama] administration can credibly counter that in neither case did Israeli unilateralism threaten
to draw America into an armed conflict, as it does now.”142 According to three Israeli analysts
(including two former officials) mentioned above:
Even after the withdrawal of its troops from Iraq, the U.S. remains extremely exposed to
Iranian retaliation—either directly against its forces in the area or by Iran’s attempting to
ignite a broader conflict in the region—so an Israeli strike would harm U.S. interests in the
region and would place many U.S. lives at risk. And while in an election year America’s
political reaction to such a strike may be mitigated by domestic political considerations, the
reaction of the U.S. defense community to an Israeli military strike might be extremely
negative, as such an action might be seen as representing Israeli insensitivity to and disregard
of U.S. priorities and concerns.143

Some reports have speculated that an Israeli decision to attack, if it occurs, could come before the
U.S. presidential election in November 2012, with one Israeli report stating, “A second-term
president, not constrained by electoral necessities, will be able to apply a lot more pressure on the
Israeli government not to attack.”144
Separate from the question of whether the United States might support an Israeli strike on Iran,
Israeli decisionmakers might be influenced by how they anticipate the United States would
respond after an attack, including in the event of retaliation by Iran and its allies. Although the
United States does not have a formal treaty obligation to defend Israel in the event it is attacked,
successive Administrations have either stated or implied that the United States would act to
protect Israel’s security if it were endangered—including by Iran—and have worked with
Congress to ensure and bolster Israel’s “qualitative military edge” over regional security
threats.145

142

Yossi Klein Halevi, “Can Israel Trust the United States When It Comes to Iran?”, The New Republic, March 2,
2012.
143
Feldman, et al., “What to Do About Nuclearizing Iran? The Israeli Debate,” op. cit.
144
Anshel Pfeffer, “US election hands Netanyahu giant dilemma on Iran,” Jewish Chronicle Online, February 9, 2012.
See also Bret Stephens, “(How) Should Israel Bomb Iran,” Wall Street Journal, February 7, 2012, stating, “Jerusalem
knows that Mr. Obama will be hard-pressed to oppose an Israeli strike—the way Dwight Eisenhower did during the
Suez crisis—before election day. A re-elected President Obama is a different story.”
145
For more information on the level of U.S. commitment to Israel’s security, see CRS Report RL33476, Israel:
Background and U.S. Relations, by (name redacted); and CRS Report RL33222,
U.S. Foreign Aid to Israel , by (name reda
cted). In addition to a Mutual Defense Assistance Agreement (TIAS 2675) dated July 23, 1952, the United States and
Israel have entered into a range of stand-alone agreements, memoranda of understanding, and other arrangements
varying in their formality. In remarks at the White House on March 5, 2012, with Prime Minister Netanyahu, the
President said, “As I’ve said repeatedly, the bond between our two countries is unbreakable. My personal
commitment—a commitment that is consistent with the history of other occupants of this Oval Office—our
commitment to the security of Israel is rock solid. And as I've said to the Prime Minister in every single one of our
meetings, the United States will always have Israel’s back when it comes to Israel’s security.” In a March 2006 speech
against the backdrop of Iran’s hostile rhetoric toward Israel and pursuit of a nuclear program, President George W.
Bush said, “I made it clear, I’ll make it clear again, that we will use military might to protect our ally Israel.” Seymour
M. Hersh, “The Iran Plans,” The New Yorker, April 17, 2006.

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It is unclear to what extent U.S. expressions of willingness to act forcefu

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Source: Frix Law Library, https://www.frixlaw.com/law-library/documents/crs%3AR42443. Public record. Not legal advice.
