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Pentagon Advisor Dan Caldwell Suspended Over Leak Investigation

Defense Secretary Pete Hegseth's top aide was escorted out of the Pentagon as part of an ongoing probe into unauthorized disclosures of sensitive national security information.

The Pentagon building is seen in Arlington, Virginia, U.S. October 9, 2020. REUTERS/Carlos Barria/File Photo
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Overview

  • Dan Caldwell, a senior advisor to Defense Secretary Pete Hegseth, has been placed on administrative leave following allegations of leaking sensitive national security information.
  • Caldwell was escorted out of the Pentagon on April 15, 2025, as part of the investigative process, according to anonymous Defense Department sources.
  • The investigation, initiated by a March 21 memo from Hegseth's Chief of Staff Joe Kasper, may involve polygraph tests to identify the source of recent leaks.
  • Caldwell played a key role in sensitive military planning, including serving as a primary contact for the National Security Council during discussions on potential strikes against the Houthis in Yemen.
  • This case underscores the administration's broader crackdown on leaks, continuing efforts to address operational security breaches that have plagued prior administrations.