Retiring Sen. Thom Tillis (R-NC) said Defense Secretary Pete Hegseth has an “insecurity complex” as he warned that the former Fox News host faces a crisis of confidence among Republicans as Donald Trump’s war in Iran continues.

“I don’t have any confidence in him anymore. I think he’s all over the place — he’s accelerating the retirement or forcing out some of the most distinguished leaders in the DOD that we have,” Tillis told The Hill.

“I think he’s got a massive insecurity complex, he has a lack of experience in large organizations; he micromanages too much. He’s lost my confidence,” the senator continued, adding, “I think there are other people that are probably one decision or another” away from speaking out critically about the leadership of the Pentagon.

Tillis, who announced his retirement last year, cast the deciding vote to confirm Hegseth for the position despite having reservations about him. Since then, he has been critical of Hegseth’s performance as defense secretary and has said the former Fox News host is “out of his depth.”

“Now, with the passing of time, I think it’s clear he’s out of his depth as a manager of a large, complex organization,” Tillis told CNN in an interview.

“I am beginning to wonder if maybe Armed Services was a little bit generous with respect to their assessment of his capabilities as a manager of the world’s largest, most complex, and arguably consequential organization,” he added.

Tillis’s vote will be critical to advancing any budget resolution before the August recess to set the stage for advancing a $95 billion reconciliation package that includes $73 billion in funding for the Pentagon and U.S. intelligence agencies, The Hill noted.