US army secretary Dan Driscoll resigns over reported friction with Pete Hegseth

Resignation comes after months of turmoil at Pentagon, from leaked investigation to ousting of senior officials

Army secretary Dan Driscoll has handed his resignation to Donald Trump, the White House said on Monday, becoming the latest high-profile figure to depart the defense department.

The army official, who is second in line to defense secretary Pete Hegseth, had reportedly been eyeing an exit from the Pentagon amid apparent friction with the secretary.