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Pentagon Probes Defense Secretary Hegseth’s Signal App Use in Yemen Strike Leak

Investigation expands as two senior advisers are placed on leave and bipartisan calls for accountability grow.

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Secretary of Defense Pete Hegseth addresses troops at the Al-Udeid air base in Qatar on May 15, 2025.
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Overview

  • Defense Secretary Pete Hegseth is under investigation by the Pentagon Inspector General for using the Signal app to share sensitive operational details of a March 15 airstrike in Yemen.
  • Hegseth reportedly disclosed real-time attack plans, including F-18 launch times and bomb drop schedules, in a Signal group chat that accidentally included a journalist.
  • A second Signal chat involving Hegseth’s family members has surfaced, allegedly sharing additional classified information, raising further concerns about protocol violations.
  • Two senior Pentagon officials, Dan Caldwell and Darin Selnick, have been placed on administrative leave as the investigation into unauthorized disclosures continues.
  • President Trump has defended Hegseth, calling the reports “fake news,” while bipartisan lawmakers and security experts demand accountability for potential breaches of military communication policies.