Hegseth Opens Second Probe Into Sen. Mark Kelly Over Classified Briefing

Pete Hegseth and Sen. Mark Kelly are at it again — and this time, the flashpoint is a Sunday morning television appearance that the Defense Secretary says crossed a very serious line.

Kelly, the Arizona Democrat and retired Navy captain, appeared on CBS’s Face the Nation with anchor Margaret Brennan on Sunday and spoke openly about the state of U.S. weapons stockpiles following more than two months of war with Iran. What he said stopped a lot of people cold.

“The numbers are, I think it’s fair to say, it’s shocking how deep we have gone into these magazines,” Kelly told Brennan. “We’ve expended a lot of munitions. And that means the American people are less safe. Whether it’s a conflict in the western Pacific with China or somewhere else in the world, the munitions are depleted.”

He named specific systems — Tomahawk missiles, Army Tactical Missile Systems (ATACMS), SM-3 interceptors, THAAD rounds, and Patriot air defense missiles — and said replenishing those reserves would take years. He tied the depletion directly to a potential future confrontation with China, raising the stakes of his remarks considerably.

Brennan flagged Kelly’s comments on X, noting they came after he received a classified Pentagon briefing on the Iran war’s impact on U.S. weapons stockpiles. That post caught Hegseth’s eye fast.

“‘Captain’ Mark Kelly strikes again,” Hegseth wrote on X Sunday evening. “Now he’s blabbing on TV (falsely & dumbly) about a *CLASSIFIED* Pentagon briefing he received. Did he violate his oath… again? @DeptofWar legal counsel will review.”

Kelly didn’t wait long to respond. He posted a video of Hegseth’s own testimony before the Senate Armed Services Committee on April 30 — a fully public hearing on the Pentagon’s fiscal 2027 budget — in which the two men discussed weapons replenishment timelines directly.

“We had this conversation in a public hearing a week ago and you said it would take ‘years’ to replenish some of these stockpiles,” Kelly wrote. “That’s not classified, it’s a quote from you. This war is coming at a serious cost and you and the president still haven’t explained to the American people what the goal is.”

During that April 30 hearing, Hegseth had told Kelly: “I think that’s exactly the right question, too, senator. Because the time frame we were existing under was unacceptable… months and years. I mean, we’re building new plants in real time.” He added that the specific timeline “depends on the weapon system.”

The Pentagon, when asked for comment by CNN, referred reporters back to Hegseth’s post.

The Feud That Keeps Escalating

Sunday’s clash is the latest chapter in a months-long war between Hegseth and Kelly that has wound its way through the courts, Congress, and now cable news. It started last November when Kelly joined five other Democratic lawmakers — all veterans or former intelligence officials — in a video urging U.S. service members and intelligence personnel to refuse what they described as “illegal orders” from the Trump administration.

“Our laws are clear: you can refuse illegal orders,” Kelly said in that clip. “You must refuse illegal orders. No one has to carry out orders that violate the law or our Constitution.”

The other lawmakers in the video included Sens. Elissa Slotkin of Michigan and Reps. Chris Deluzio and Chrissy Houlahan of Pennsylvania, Maggie Goodlander of New Hampshire, and Jason Crow of Colorado. President Trump called the group “traitors” who engaged in “sedition at the highest level” and suggested they “should be in jail” — comments he later attempted to walk back. He even briefly suggested they could be executed, a remark he also tried to soften. Slotkin, a former CIA and Pentagon official, received a bomb threat in the days following Trump’s statements.

Hegseth moved aggressively in response. The Pentagon launched a formal investigation into Kelly under a federal law that allows retired officers to be recalled to active duty for possible court-martial. Hegseth formally censured Kelly and attempted to retroactively strip him of his retired rank of Navy captain — a move that would have directly reduced his pension. Kelly sued Hegseth in January over the threatened demotion and benefits cut, writing at the time: “Pete Hegseth is coming after what I earned through my twenty-five years of military service, in violation of my rights as an American, as a retired veteran, and as a United States Senator whose job is to hold him — and this or any administration — accountable.”

A federal judge blocked those actions in February, ruling the Pentagon had likely violated Kelly’s First Amendment rights — and those of “millions of military retirees” — when it formally censured him. Hegseth appealed. Last week, a three-judge panel at the D.C. Circuit Court of Appeals heard oral arguments and appeared largely skeptical of the government’s position. The panel has not yet issued its ruling.

A grand jury had also previously declined to sign off on charges against Kelly and the other lawmakers over the video.

“I will not back down from this fight,” Kelly said after last week’s appeals court hearing.

What the Numbers Actually Show

Whatever the legal outcome of Hegseth’s latest review, the underlying concern Kelly raised isn’t without independent backing. An analysis by the Center for Strategic and International Studies, conducted as of April 21, found the U.S. military had expended at least 45% of its Precision Strike Missile stockpile, at least half of its THAAD inventory, and nearly 50% of its Patriot air defense interceptor missiles. Three people familiar with recent internal Defense Department stockpile assessments told CNN those figures closely align with classified Pentagon data — which puts Kelly’s characterization of the situation as “shocking” in a complicated light.

Kelly sits on both the Senate Armed Services Committee and the Senate Intelligence Committee, giving him access to some of the most sensitive military assessments in Washington. Whether the specific details he aired on Sunday crossed from public record into classified territory is now, officially, a question for Pentagon lawyers.

“This war is coming at a serious cost,” Kelly wrote Sunday night, “and you and the president still haven’t explained to the American people what the goal is.”