Defense Secretary Pete Hegseth on Sunday accused Senator Mark Kelly (D-AZ) of disclosing classified information during an appearance on CBS's Face the Nation. The allegation escalates an already tense feud between the two men over the Trump administration's handling of the ongoing military conflict with Iran.

In a post on X, Hegseth wrote, "'Captain' Mark Kelly strikes again," referencing a summary by host Margaret Brennan of Kelly's remarks about U.S. weapons stockpiles. Hegseth claimed Kelly revealed details from a classified Pentagon briefing. "Now he's blabbing on TV (falsely & dumbly) about a *CLASSIFIED* Pentagon briefing he received. Did he violate his oath…again?" Hegseth added that the Pentagon's legal counsel "will review" the senator's comments.

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Kelly, a retired Navy captain and former astronaut, told Brennan that the Pentagon briefed him and other senators on how the war with Iran has depleted American munitions. He specifically cited Tomahawk missiles, ATACMS, SM-3 interceptors, THAAD rounds, and Patriot batteries. "The numbers are, I think it's fair to say it's shocking how deep we have gone into these magazines," Kelly said. He warned that replenishing these reserves would take "years," a timeline he argued underscores the administration's lack of a clear strategy.

This is not the first clash between Kelly and Hegseth. In January, Kelly sued the Pentagon after Hegseth reduced his retired rank and issued a formal letter of censure. That action followed a video in which Kelly and five other Democratic lawmakers with military or intelligence backgrounds urged service members to refuse illegal orders. A federal judge blocked the Pentagon's move in February, citing First Amendment protections for retired personnel. An appeals panel in the D.C. Circuit recently heard arguments in the case and appeared skeptical of the government's position. The appeals panel pressed the Pentagon on retiree speech limits.

In his Sunday night response, Kelly posted a video of Hegseth testifying before the Senate Armed Services Committee on April 30, where he himself discussed stockpile replenishment timelines. During that hearing, Kelly asked Hegseth how long it would take to rebuild reserves. Hegseth replied, "I think that's exactly the right question, too, senator… Months and years. I mean, we're building new plants in real time." Hegseth also blamed the Biden administration for sending weapons to Ukraine, which he said exacerbated the shortage.

Kelly seized on that exchange, writing: "We had this conversation in a public hearing a week ago and you said it would take 'years' to replenish some of these stockpiles. That's not classified, it's a quote from you." He added, "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."

The dispute highlights broader concerns about transparency and strategic direction. Kelly has previously questioned the strategic value of the two-month Iran war as costs mount. Meanwhile, the Pentagon's massive budget request has drawn criticism from watchdog groups. Oxfam warned that Trump's $1.5 trillion Pentagon request is a war budget, not a defense budget.

The legal and political battle over Kelly's rank and speech rights continues, with the appeals court yet to issue a final ruling. For now, both sides show no signs of backing down.