U.S. Defense Secretary Pete Hegseth is unlikely to keep hold of his position for much longer, the Pentagon‘s former top spokesperson has said, as the Department of Defense contends with “total chaos” in the wake of further reported leaks of sensitive military information and high-profile firings.

“It’s hard to see Defense Secretary Pete Hegseth remaining in his role for much longer,” former Pentagon spokesperson, John Ullyot, said in an opinion piece penned for Politico, published on Sunday.

Ullyot resigned from his position at the Department of Defense’s top spokesperson last week.

Ullyot said the Pentagon’s most senior ranks were “near collapse,” and accused Department of Defense officials close to Hegseth of launching “smear” campaigns against three senior staffers fired earlier this month.

“In short, the building is in disarray under Hegseth’s leadership,” Ullyot said.