Republican Rep. Thomas Massie moved Monday to force a U.S. House vote on impeaching Pentagon chief Pete Hegseth, advancing a resolution focused largely on the war in Iran despite objections from House Republican leaders.

CBC, carrying Associated Press reporting, reported that the resolution also references Hegseth’s role in U.S. military actions in Yemen and Venezuela. The move puts pressure on Republicans to take a position on a prominent Trump administration official after midterm election losses that cost their party control of Congress.

Hegseth defended his record Monday after a speech at the Naval War College in Rhode Island, saying he was willing to debate the administration’s military actions.

“There’s a lot of politically motivated people who may have substantial policy disagreements, but their disagreements are with success,” he told reporters.

He also announced a news conference for Tuesday to address the impeachment threat. According to the report, it would be his first briefing in more than 180 days.

The impeachment push comes amid anger over the Iran war and its economic consequences. CBC and AP reported that Iranian attacks on commercial ships in the Strait of Hormuz have disrupted shipping and helped drive up energy prices. Before the war, about one-fifth of the world’s oil passed through the waterway.

Hegseth argued that military action was necessary to confront what he described as Iran’s pursuit of a nuclear weapon. Iran has long maintained that its nuclear program is peaceful.

President Donald Trump defended Hegseth on Sunday, portraying the military campaigns as victories and rejecting the case for impeachment. Hegseth likewise dismissed the pressure Monday, saying his team was not worried about “the noise.”

The report did not give a date for a House vote.

Sources