The US Senate has voted 50-48 to adopt a War Powers Resolution directing President Donald Trump to end hostilities against Iran unless Congress authorises further military action.
The measure was approved under Section 5(c) of the 1973 War Powers Resolution after it had passed the House.
Republican Senators Bill Cassidy of Louisiana, Susan Collins of Maine, Lisa Murkowski of Alaska and Rand Paul of Kentucky joined Democrats in supporting the resolution.
Democratic Senator John Fetterman of Pennsylvania voted against it, while Republican Senators Mitch McConnell of Kentucky and Dave McCormick of Pennsylvania did not vote.
Bipartisan pushback
The practical impact of the measure remains uncertain as Washington and Tehran have already reached an interim peace agreement.
