Most Israelis backed the Iran war early on. A later poll found division over new strikes.

Most Israelis supported the Iran campaign in its first weeks, according to national polls. But the later evidence does not support carrying that early majority forward as a blanket endorsement of another attack. A September survey found 40% backed a preemptive Israeli strike and 46% opposed one.

The distinction is central to answering whether most Israelis support the war. Approval of an operation already underway, support for continuing it, and willingness to launch a new strike are different judgments. Each can change as the costs, choices and expected results change. INSS September survey, Iran section.

There is also a large divide within Israel. Jewish Israelis supplied the strong majority behind the early campaign; Arab Israelis were much less supportive. Describing only Jewish respondents as “Israelis” would leave a substantial part of the country's public out of the story.

In the United States, a Jewish Voters Resource Center survey conducted August 26–September 1 found 63% of Jewish registered voters opposed U.S. military action in Iran and 37% supported it. The 800-person text-to-web study reported a 3.5-point margin of error. Its population and question differ from the Israeli adult surveys, so subtracting their percentages would not produce a clean measure of a transatlantic opinion gap. Original U.S. topline; methods.

The findings offer a useful comparison with our reporting on American Jewish voters' opposition to the Iran war. They describe different populations, asked different questions at different times. Jewish identity alone does not determine a shared view of military action across countries.

The early majority was real—and dated#

Two Israeli research institutes recorded broad support at the start of the campaign. Later measurements tested its continuation or a possible new attack. This table preserves those differences rather than presenting the percentages as one continuous measure.

Sources: INSS's first flash survey, IDI's March 4 report, IDI's March 30 report, and INSS's September report.

IDI's first survey asked about support for Operation Roaring Lion, the joint U.S.-Israeli military attack on Iran. It found 93% support among Jewish respondents and 26% among Arab respondents. Its national result was 82%, reflecting the population's composition rather than an equal average of the two groups. IDI's original findings.

That online study, conducted through iPanel, interviewed 599 adults: 500 in Hebrew and 99 in Arabic. IDI reported a full-sample margin of error of four percentage points at 95% confidence. Its findings described adults in Israel, rather than an online poll open to anyone who wanted to click. IDI's methods.

INSS's separate March 1–2 study surveyed 954 adults online through iPanel, with 805 completing it in Hebrew and 149 in Arabic. After population weighting, its published maximum sampling error was about 3.17 points. Agreement across the two institutions strengthens the evidence for an early majority, although both used the same fieldwork provider. INSS's methods and results.

Continuing a war is a separate choice#

By March 22–26, IDI was asking about continuation. Support remained a national majority at 68%, including 78% among Jewish respondents and 19% among Arab respondents. IDI explicitly noted that earlier surveys asked about the operation itself, while the later question asked whether it should continue. March 30 report.

The strength of Jewish support also differed. Half of Jewish respondents strongly supported continuation, compared with 74% strongly supporting the operation at the beginning of March. Those figures are percentages of the Jewish sample, not percentages within the group that supported the war. The question change is another reason to avoid treating the difference as a perfectly comparable decline. IDI's breakdown.

This study interviewed 756 adults through the internet and telephone, including people less well represented online. Shiluv-i2r conducted the fieldwork; the published full-sample margin was 3.56 points at 95% confidence. Subgroup estimates have greater uncertainty than that national margin. Survey methodology.

The result supports a specific conclusion: even after several weeks, most respondents wanted the campaign to continue. It does not establish unlimited patience, approval of every target or agreement on every objective. A person can support military action while doubting the leadership, the timetable or the prospects for a political settlement.

September did not show a majority for a new strike#

The later INSS question asked how strongly respondents supported or opposed a preemptive Israeli strike against Iran at that time. Alongside the 40% supporting and 46% opposing, 14% answered that they did not know. Opposition was the largest response, but it was below a majority.

Support

40%

Oppose

46%

Don't know

14%

Source: INSS September report

Show the numbers

Response	Share
Support	40%
Oppose	46%
Don't know	14%

INSS surveyed 920 adults online through iPanel, weighted by population group. It reported a full-sample maximum error of 3.23 points at 95% confidence. These September results were reviewed on November 6. Original report and methodology.

Expecting another confrontation is also distinct from wanting one. People may anticipate an outcome they hope leaders will prevent. A forecast question cannot substitute for a question about what the government should do.

The published margin is also only one part of uncertainty. Wording, participation and who an online panel reaches can affect results. The responsible description is that the September public was divided over a new strike, with more respondents opposed than supportive. It would be inaccurate to call either side an outright majority on that question.

The security case, in the military's own words#

The Israeli military's March 1 X post illustrates the official threat argument. It described Iran's missile production and protected underground infrastructure as dangers to Israel, presenting missile capabilities in the hands of a hostile regime as an existential threat. That is the military's stated rationale; its production forecast in the post is not an independently verified finding of this article.

View this post on X

The strongest case for force is preventive: if an adversary can rebuild dangerous capabilities while negotiations fail, waiting may leave the public more exposed. Supporters may therefore accept immediate costs because they judge the risks of inaction to be greater. That argument still requires a judgment about what military action can achieve and how lasting its effects will be.

Public support cannot verify a weapons assessment. Nor can the existence of a threat, by itself, establish that every possible response will make people safer. Those are separate evidentiary and strategic questions, even when the public strongly favors action.

Israeli opposition was visible too#

Alon-Lee Green, then a national co-director of the Jewish-Arab movement Standing Together, posted on March 20 about antiwar demonstrations in Tel Aviv. In the Hebrew post, he said the protests were expanding, described hundreds attending that day and expressed an ambition to bring out thousands the following week. Those are his descriptions and expectations, not independently verified crowd counts.

View this post on X

In a subsequent statement reproduced by Pressenza, Green argued that recurring wars in Iran and elsewhere were bringing more deaths without lasting safety. His case connected the security of Israelis with the lives of people across the region, calling for an alternative to repeated military campaigns. Green's March statement.

That position was part of the domestic debate even while polls showed a supportive majority. A minority can organize, protest and offer a substantive alternative without being mistaken for the entire country. Equally, a majority does not erase the minority's views or establish that dissenters face different basic security needs.

These two posts were selected to illustrate contrasting Israeli institutional and activist arguments during March. Their authors, dates and original permalinks were checked. They are not a representative sample of X, and likes, replies or video views were not used to estimate public opinion.

The choice extends beyond support or opposition#

There is also a dispute over what achievable goals should guide policy. In a November 3 analysis, INSS researcher Raz Zimmt argued that Israel should address urgent nuclear and missile threats without basing strategy on an assumed collapse of Iran's government. He supported efforts to weaken the regime over time, while stressing that political change depended on dynamics within Iran. Zimmt's original analysis.

This is distinct from both endorsing an open-ended campaign and rejecting all pressure. It asks leaders to separate a desirable political outcome from a result they can reasonably plan to deliver. The analysis represents its author's strategic judgment, rather than another opinion poll.

Israel's election and government negotiations add a separate question of political authority. Our coverage of the coalition timetable and competing blocs explains that process. A parliamentary result cannot be read as a referendum on one foreign-policy choice when voters weigh multiple issues.

The comparison with the United States requires similar care. Our reporting on American voters' judgments of the Iran war uses different samples and questions. It should inform the comparison without turning either country into a single, unchanging voice.

Under our standards for reporting public opinion, the conclusion must retain its dates and scope: most Israelis backed the early campaign, including a majority favoring continuation in late March. The September evidence reviewed here showed no majority for a new preemptive strike. Reporting both findings gives a fuller answer than repeating the opening-week numbers as today's verdict.

Differing perspectives

How should Israel address the threat from Iran after the 2026 military campaign?

Each position is summarized as its supporters make it, with equal weight and in alphabetical order. A summary is not an endorsement; the evidence for each is weighed in the story above.

• End recurring military campaigns

  Who holds it: Standing Together's Alon-Lee Green, in his March antiwar statement

  Repeated wars impose deaths and disruption on Israelis and people across the region without delivering lasting safety. A different political path should replace the cycle of renewed campaigns. Jewish and Palestinian citizens can organize together to demand that alternative, even during missile attacks. Building public opposition is a way to challenge the assumption that another war will solve the underlying security problems.

  In their words: Alon-Lee Green's statement, reproduced by Pressenza ↗

• Plan around achievable security goals

  Who holds it: Raz Zimmt, director of INSS's Iran and the Shiite Axis research program

  Israel should address urgent nuclear and missile threats without assuming that Iran's government will soon collapse. Political change depends on internal balances of power and a viable alternative leadership. Israel can work to weaken the regime through diplomatic, economic and covert tools, but planning for immediate threats should not depend on an uncertain revolution or the belief that damage to infrastructure guarantees political change.

  In their words: Raz Zimmt, INSS, November 3, 2026 ↗

• Use force against threatening capabilities

  Who holds it: Israel Defense Forces, in its March 1 security message

  Iran's missile capabilities present an existential danger when held by a regime committed to Israel's destruction. Accelerating production and protected underground infrastructure make allowing those capabilities to expand a serious security risk. Military action should be understood against that threat: preventing a hostile government from rebuilding and strengthening the means to attack Israel is central to protecting the country and its population.

  In their words: Israel Defense Forces, original March 1 X post ↗

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