Senate Republicans Challenge Defense Secretary Pete Hegseth’s Leadership Amid Personnel Turmoil

Senate Republicans are increasingly questioning Defense Secretary Pete Hegseth’s leadership after a series of senior-military departures, including Army Chief of Staff Gen. Randy George and Navy Secretary John Phelan. The criticism will be aired during Hegseth’s scheduled testimony before the House and Senate Armed Services Committees.

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George’s resignation in early April was followed days later by Phelan’s dismissal and the removal of several other senior leaders, such as Joint Chiefs Chairman Gen. C.Q. Brown, Chief of Naval Operations Adm. Lisa Franchetti, and Air Force Chief of Staff Gen. James Slife. The moves occur as U.S. forces confront Iran.

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Key actors include Secretary Hegseth; former Army Chief Gen. Randy George; former Navy Secretary John Phelan; Army Secretary Dan Driscoll; and Republican senators Thom Tillis, Joni Ernst, Mike Rounds, Lisa Murkowski, and Roger Wicker.

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Early April 2024 – Gen. George asked to resign; Mid-April – Phelan fired; Late April – additional senior officers removed; May 2024 – Hegseth’s congressional hearings.

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Pentagon spokesperson Sean Parnell said the secretary does not comment on individual departures, noting that reforming a department as large as the Defense Department “requires changes” in senior leadership.

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Republican senators say the Pentagon has experienced a significant erosion of senior leadership and that Hegseth lacks experience managing an organization of this size. They argue that dismissing respected generals harms continuity, morale, and the war effort against Iran, and they criticize the recent decision to drop mandatory flu-shot requirements for service members.

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Hegseth has offered no public explanation for the dismissals, and the Pentagon has provided only generic statements about aligning leadership with administration priorities, leaving the precise rationale unclear.

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• “The hollowing out of incredible leadership at the Pentagon has been a big concern,” — Republican senator (anonymous)

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• “I think he’s missing the mark on personnel. He has separated some of the most extraordinary generals that we’ve had in play. I don’t quite know what’s going on there,” — Sen. Thom Tillis (R-NC)

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• “I have the greatest admiration and respect for Gen. Randy George. He’s probably one of the finest officers the United States Army has ever produced. It was a mistake for Secretary Hegseth to dismiss him,” — Sen. Joni Ernst (R-IA)

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• “a mistake” — Sen. Roger Wicker (R-MS)

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Hegseth will defend the $1.5 trillion budget and Iran strategy before the committees. Republicans may press for further detail and could urge President Trump to consider a new defense secretary.

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