Washington, Nov. 10 -- US Defence Secretary Pete Hegseth has dismissed efforts to impeach him as a political stunt, accusing Republican Representative Thomas Massie of pursuing a personal vendetta, while Vice-President JD Vance has defended the embattled Pentagon chief and rejected claims that the move is primarily about the war with Iran.

Speaking at a rare Pentagon briefing on Tuesday, Hegseth described the impeachment resolution introduced by Massie as a "farce" and "a stunt", arguing that no defence secretary had ever been impeached for conducting what he called lawful military operations.

"One disgruntled and defeated congressman" was attempting to use impeachment for reasons of "ego and resentment", he said, referring to the Kentuck...