The US Senate voted 46-51 on Wednesday to defeat a Democratic-sponsored war powers resolution that would have prohibited President Trump from continuing military operations against Iran, marking the fifth time Republicans have blocked such measures since the conflict began 53 days ago.

The vote came amid an ongoing but fragile ceasefire between the two nations, though no date has been set for formal negotiations. White House Press Secretary Karoline Leavitt said President Trump is seeking a "unified proposal" from Iranian negotiators, citing internal divisions within Iran's government as an obstacle to progress.

Separately, US forces intercepted three Iranian oil tankers in Asian waters, according to sources, while Iran announced it had seized two ships. Iranian President Hassan Rouhani cited US "breach of commitments" and a "blockade of ports" as the main obstacles to "genuine negotiation."

The conflict has created broader economic concerns, with energy markets closely watching developments. A Marquette Law School Poll released Wednesday showed 75 percent of Americans approve of the current ceasefire, while 24 percent disapprove.

Sen. Elizabeth Warren has pressed the Trump administration for answers regarding evacuation plans for Americans in the region. The situation remains fluid as both sides navigate the terms of the temporary ceasefire while facing a 60-day deadline under the War Powers Act that could limit the president's military options without congressional approval.