Trump’s remarks came after the US Senate approved a largely symbolic measure calling for an end to hostilities with Iran, marking a fresh rebuke to the White House as it pursues negotiations aimed at securing a long-term agreement with Tehran.

The resolution, which had already been passed by the House of Representatives, was adopted by the Senate in a 50-48 vote.

It directs Trump to withdraw US forces from hostilities with Iran unless Congress explicitly authorises military action.

As a concurrent resolution, the measure does not require presidential approval and its legal effect remains disputed.

Nevertheless, the vote puts both chambers of Congress on record against a conflict that erupted after US and Israeli strikes on Iran in late February and later widened into a broader regional confrontation involving Lebanon and Gulf states.

The vote came as the Trump administration launched a 60-day diplomatic effort to turn a preliminary understanding with Iran into a comprehensive agreement covering Tehran’s nuclear programme, sanctions relief and the future of the Strait of Hormuz.

Senate Democratic leader Chuck Schumer forced the vote after several Republican allies of Trump voiced concerns over both the war and the administration’s efforts to end it.

“Republicans can complain about Trump’s war, his secrecy, and his disastrous deal with Iran all they want behind closed doors, but the only way to ensure this war ends once and for all is for Republicans to act,” Schumer said ahead of the vote.

The measure had earlier cleared the Republican-controlled House with support from four Republicans and all Democrats, reflecting a rare break with Trump on matters of war and national security.

Democrats argue that Trump violated the Constitution by launching military operations against Iran without congressional approval.

Under the 1973 War Powers Act, presidents are required to obtain congressional authorisation within 60 days of introducing US forces into hostilities, although administrations of both parties have long disputed how the law applies.

The White House maintains that attempts to restrict Trump’s authority are unconstitutional and says the conflict effectively ended under an April ceasefire ordered by the president.

It has also argued that limiting presidential powers could weaken Washington’s leverage in negotiations with Tehran.

House Speaker Mike Johnson warned before the House vote that curbing the commander-in-chief’s authority during sensitive negotiations would be a “very dangerous prospect.”

Critics, however, say the fighting continued beyond the legal deadline and point to Trump’s repeated threats of renewed strikes.

The conflict has also heightened concerns in Congress over its economic impact, with disruptions to trade routes and rising energy prices adding to inflation worries ahead of November’s midterm elections.