The US Senate has once again rejected a resolution seeking to end American military operations in Iran, marking the sixth failed attempt to push for a halt in military action.

The resolution was defeated by 50 votes to 47, reflecting continued political divisions in Washington over the future of US involvement in the conflict. Lawmakers debated whether military pressure should continue or whether Congress should move to limit the president’s war powers in relation to Iran.

The latest vote showed slightly weaker support for the measure compared with the previous attempt. During the earlier vote, 48 senators had backed the proposal. This time, support dropped by one vote, highlighting the difficulty faced by lawmakers trying to build wider support for ending military action.

The resolution was introduced for the sixth time by Democratic Senator Adam Schiff, one of the leading voices in Congress calling for greater oversight of US military operations abroad. Supporters argued that Congress should have a stronger role in decisions that could deepen regional tensions.

A notable development came from Pennsylvania Democratic Senator John Fetterman, who voted against the ceasefire measure. His position drew attention because it showed divisions even within the Democratic Party over how Washington should respond to the Iran situation.

Two Republican senators, Susan Collins and Rand Paul, voted in favour of the resolution. Collins’ vote was particularly significant because it marked the first time she publicly backed a call for ending US military action in Iran.

Despite the defeat, the latest vote keeps the debate over US policy toward Iran firmly alive in Congress.