Six months into the United States’ war with Iran, the Pentagon finds itself embroiled in a leadership crisis that has drawn sharp criticism from within its own ranks and on Capitol Hill. At the center of the turmoil is Secretary of Defense Pete Hegseth, whose sweeping personnel changes, controversial priorities, and management style have triggered the resignation of Army Secretary Dan Driscoll and a chorus of concern about the military’s ability to adapt to modern warfare.
On September 2, 2026, Senator Thom Tillis (R-N.C.), a former member of the Senate Armed Services Committee, publicly called on President Donald Trump to fire Hegseth. In a scathing social media post, Tillis wrote, “I have never witnessed more inept management of the brave men and women who serve our country. He is intimidated by competence and retreats to ginning up culture wars instead of soberly attending to the vital work of our national defense and the health and well-being of our fighting force.” According to Axios and CNN, Tillis, who cast a pivotal vote to confirm Hegseth last year, is now urging the president to “find a new leader at the Pentagon who will retain and empower our military talent rather than diminish it.”
Tillis’s call comes in the wake of Army Secretary Dan Driscoll’s resignation on September 1, after months of reported clashes with Hegseth over the direction of Army leadership and modernization. Driscoll, once seen as a rising star and a close ally of Vice President Vance, was tapped by Trump for sensitive diplomatic roles and was a key proponent of the Army Transformation Initiative—a program aimed at rapidly integrating unmanned aircraft systems and adapting to the evolving realities of warfare in places like Ukraine and Iran.
Driscoll’s departure, following the earlier ouster of Army Chief of Staff Gen. Randy George, has left the Army without Senate-confirmed civilian or uniformed leadership at a critical moment. As The Washington Post and AP report, Hegseth has remade nearly the entire Joint Chiefs by firing or forcing out senior officers across every service branch, including the chairman of the Joint Chiefs, the Navy’s top admiral, and the Army chief of staff. Only the Marine Corps and Space Force chiefs remain from before his tenure. In 2026 alone, Hegseth personally removed at least 45 officers from promotion lists and blocked the promotions of more than a dozen Black, Hispanic, or female officers, according to NBC News.
The cumulative effect has been a “leadership void at the top of our military ranks,” as Tillis put it. Other Republican lawmakers have echoed this concern. Senator Mike Rounds (R-S.D.), also of the Armed Services Committee, expressed disappointment at Driscoll’s resignation, highlighting the importance of drone tactics and innovation for Army readiness: “This issue that’s going on with regard to Ukraine, the use of drones, the integration of drones into this — this is not a new thing that just happened. We’ve been watching this ever since 2021. … Watching the Ukrainians do a marvelous job with drones. We’ve been watching this.”
Sources cited by CNN and Reuters argue that Hegseth’s focus on culture wars—such as efforts to root out “wokeness,” remove transgender service members, and restore Confederate-era base names—has come at the expense of modernization and readiness. A former senior Army official told CNN, “When you fire these guys for arbitrary reasons, it creates confusion and a void … the Army is enduring turbulence right now.” Another defense official in Europe remarked, “It’s conflicting because yeah he put out a memo saying this is important, but … he’s talking about muscles, dudes in dresses, testosterone. We don’t see a change at that level.”
Driscoll, for his part, stated in his resignation that it was the “honor of a lifetime” to serve under Trump and Hegseth and credited Hegseth’s early support for some of the Army’s progress. Yet, multiple sources told CNN that Driscoll’s and Deputy Secretary Dave Fitzgerald’s focus on modernization clashed with Hegseth’s priorities. The two reportedly had not spoken “for some time” before Driscoll’s resignation, and Hegseth was perceived as viewing them as misaligned with his vision for the Army.
General Christopher LaNeve, now the Army’s acting chief of staff, has faced questions about his preparedness for the role. According to sources, LaNeve’s “back to basics” approach and emphasis on individual standards are seen as a step backward from the modernization efforts championed by Driscoll, George, and others. LaNeve has also reportedly asked staff to sign nondisclosure agreements, an unusual move for a uniformed leader.
The Pentagon’s operational challenges have only intensified as the Iran war drags on. Reports from The Washington Post and AP indicate that the war has consumed 65% of the U.S. Patriot interceptor inventory, strained munitions supplies for NATO, and left only about one-quarter of Navy destroyers ready to deploy, with the Pacific’s only dedicated carrier diverted to the Middle East. Top commanders overseeing Europe, the Pacific, and Latin America have formally objected to extending forces for the Iran war, warning that prolonged deployments are degrading readiness to confront other threats, including China.
Despite mounting criticism, Pentagon spokesman Sean Parnell has vigorously denied claims of disarray or shortages, calling such reports “completely baseless and an insult to every dedicated professional and warfighter in this building who comes to work every day to defend this nation.” Parnell also stated, “Secretary Hegseth has been a transformative leader for the Department of War and, at President Trump’s Direction, has ushered in a new era of Peace Through Strength. Standards and merit are back, our arsenal is stronger than ever before, and morale and recruitment across every service are at all time highs.”
Yet, the Pentagon’s increasing opacity has not gone unnoticed. It has not held a formal press briefing since May 5, nearly four months ago, despite being engaged in an active war. The Post also reported that several MAGA-aligned military influencers have been installed in civilian roles, and top employees at the military newspaper Stars and Stripes are suing the Pentagon, alleging retaliation for critical coverage.
Public confidence in the Trump administration’s handling of the war has plummeted. A University of Massachusetts poll released on August 31 showed that more than two-thirds of Americans disapprove of the administration’s approach, with fuel prices soaring and the conflict spreading across the Middle East.
As the Pentagon’s internal battles play out against the backdrop of a grinding foreign war, the stakes for America’s military readiness and global standing have rarely felt so high. The coming months will test whether the institution can recover its footing—or whether the leadership void will deepen further.