A man holds an Iranian flag near an anti-US billboard depicting US President Donald Trump and the Strait of Hormuz, in Tehran, Iran, May 30, 2026. Photo: Majid Asgaripour/WANA (West Asia News Agency) via REUTERS

The vote was 215-208. Four Republicans crossed the aisle. Cheers erupted in the chamber. For the first time, the US House of Representatives approved a war powers resolution that would halt US military action against Iran, and the people celebrated.

What they did not appear to understand is that if they actually succeeded, they would hand Iran the single outcome it has been pursuing since the conflict began: an exit from the war with its nuclear infrastructure intact.

This conflict has cost the American taxpayer more than $100 billion over three months, and public opposition to the war has grown as gas prices have spiked. Those are real costs, and the political pressure behind the vote is comprehensible. House Speaker Mike Johnson (R-LA) had tried to prevent the outcome, abruptly shutting down floor action two weeks ago when the resolution was on the verge of passing — but that didn’t work.

The resolution now moves toward a Senate that has already shown its own fractures, and toward a White House that will almost certainly veto it, but the trajectory is clear. Each successive vote has moved closer to the threshold. This was the fourth time the House had tried to curb the war, and each time, the vote tallies had inched higher as political unease swelled.

The premise behind the antiwar position is that the Iran conflict is an optional war, reckless in its origin and costless to abandon. House Minority Leader Hakeem Jeffries (D-NY) called it “a reckless and costly war of choice” that has left the country weaker relative to Iran. That framing has rhetorical appeal. It has almost no strategic content.

The reason the United States went to war in February was not a miscalculation or a personality issue in the White House. It was the accumulated failure of two decades of diplomacy, sanctions, and deterrence to stop Iran from advancing to the threshold of nuclear weapons capability.

The war, whatever its tactical complications and humanitarian costs, is the last instrument available to prevent a nuclear-armed Iran short of a verified, enforceable agreement with enforcement mechanisms. Ending the war before that objective is achieved does not produce peace. It produces the precise outcome that made war seem necessary in the first place: an Iran emboldened by American retreat, enriching uranium behind the political cover of a terminated conflict.

There is a deeper irony here that the celebrating members of Congress appear not to have considered. The same coalition that is loudest about ending the Iran war is, by consistent record, also the most resistant to the kind of coercive, maximalist nuclear deal that would actually constrain Tehran. They opposed the toughest inspection regimes as “provocative.” They soft-pedaled Iranian violations of the 2015 agreement as negotiating friction. They resisted the snapback mechanism that would have preserved leverage.

A diplomatic settlement with Iran that emerges from a position of American military exhaustion and political retreat will not be a strong agreement. It will be the 2015 deal with less leverage, fewer verification mechanisms, and an Iran that has learned it can wait out American political will.

Iran targeted US bases in Kuwait and Bahrain, as well as vessels near the Strait of Hormuz over the past week. Kuwait’s Foreign Ministry condemned the attacks and accused Washington of using Middle Eastern territory to carry out military operations against Iran. Iran has deliberately widened the circle of conflict to make the war feel uncontainable, to exhaust allies, and to give the American antiwar bloc the footage it needs to build political pressure for withdrawal. The House vote on Wednesday is evidence that strategy is working.

None of this is an argument for permanent war. It is an argument that the terms on which the war ends matter enormously, and that a Democratic-led push to end it before Iran’s nuclear program is verifiably dismantled or constrained is not a peace policy. It is a proliferation policy with better messaging.

The White House has dismissed the resolution as an unconstitutional attempt to restrict presidential power. That argument may prevail legally. But it will not silence the political pressure. The administration needs to move faster, not because Congress is right, but because the political window to finish this with Iran’s nuclear program actually resolved is closing. The 215 members who voted to end the war on Wednesday did not intend to give Iran the bomb. That is what makes their vote so dangerous.

Amine Ayoub, a fellow at the Middle East Forum, is a policy analyst and writer based in Morocco. Follow him on X: @amineayoubx.