Senate demands Trump halt Iran war or seek congressional approval.

The Republican‑controlled Senate passed a concurrent resolution Tuesday that requires President Donald Trump to stop or obtain congressional consent for the U.S. military’s campaign in Iran. The 50‑48 vote marks the first time both chambers of Congress have issued a war‑powers directive since the 1973 War Powers Resolution was enacted.

While the measure has no legal force, it is a harbinger of shifting political dynamics. A handful of Republicans joined Democrats to counter Trump’s stance, creating the first clear break in support for the president by his own party.

Experts note that the resolution likely won’t change the current ceasefire or the U.S. presence in Iran, as the administration has repeatedly said it would ignore the vote. The legal ramifications are minimal, but the political significance is significant: a bipartisan Senate now openly challenges Trump’s war posture.

With November’s midterm elections looming, the vote reflects Republican concerns about foreign policy direction and campaign backlash. Some GOP leaders fear alienating voters, yet others aim to signal independence from Trump to attract moderates.

The resolution co‑exists with a recent House vote that also ordered a halt to the Iran conflict. Both chambers out of power sensitivity comes as the U.S. and Iran maintain a ceasefire and negotiate a memorandum to address Iran’s nuclear programme over the next 60 days.