Joe Kasper, former chief of staff to Defense Secretary Pete Hegseth, likely walked out of the Pentagon as a Department of Defense (DOD) employee for the last time Thursday as controversy over leaked classified information spiraled out of control. His exit follows bombshell revelations that Hegseth shared sensitive military plans — including airstrike details in Yemen — with unauthorized parties via Signal, an encrypted messaging app.
The scandal, now called “Signalgate,” has set off a series of investigations and toppled senior aides, including Deputy Chief of Staff Darin Selnick and Senior Advisor Dan Caldwell. Former Pentagon spokesman John Ullyot called it a “full-blown meltdown,” and warned that Hegseth’s days could be numbered.
Even as the chaos grows, President Trump is standing by Hegseth — at least publicly. But the fallout is exposing serious cracks in the Pentagon’s leadership and raising alarms about operational security.
Kasper’s abrupt departure marks another blow during a brutal period of scrutiny. Although Hegseth told the hosts of “Fox & Friends” that his chief adviser would move to “a slightly different role” within the DOD, Kasper is officially gone — eyeing a return to government relations and consulting.
A senior official confirmed the news on Friday, according to a report by The Guardian:
“Secretary Hegseth is thankful for [Kasper’s] continued leadership and work to advance the America First agenda,” the official said in a statement, referring to Donald Trump’s protectionist policy push.
The quick exit comes after Kasper was implicated as the orchestrator of a power grab that led to the dismissal of three senior Pentagon officials – Dan Caldwell, Darin Selnick and Colin Carroll – allegedly as part of a leak investigation.
The administration’s first hundred days created a troubled tenure for Kasper, with anonymous sources claiming he was frequently late to meetings, failed to follow through on critical tasks, and displayed inappropriate behavior, including berating officials and making crude comments allegedly about his bowel movements during high-level meetings.
“He lacked the focus and organizational skills needed to get things done,” one anonymous insider told Politico.
Other reports surfaced that the strip club aficionado shared inappropriate personal stories about exotic dancers during classified meetings — one of several reasons he became a liability. He’s now the fifth top aide to leave Hegseth’s circle in just a week.
Meanwhile, the broader Pentagon leadership is under fire for security breaches, including Hegseth’s use of an unsecured “dirty” internet line for Signal communications — a move that may have exposed critical data to foreign surveillance, according to NSA warnings.
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