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What the Signal chat leak reveals about Trump’s Middle East policy

Washington is reeling from an unprecedented leak of the military’s operational plans to strike Yemen’s Houthis, which were shared on a Signal group chat that included a high-profile journalist.

U.S. Secretary of Defense Pete Hegseth participates in a TV interview outside of the White House on March 21, 2025 in Washington, DC. Hegseth visited the White House to join U.S. President Donald Trump in announcing the Next Generation of Air Dominance (NGDA) program, the F-47, the sixth-generation high-tech Air Force fighter to succeed the F-22 Raptor. (Photo by Anna Moneymaker/Getty Images)
U.S. Secretary of Defense Pete Hegseth participates in a TV interview outside of the White House on March 21, 2025 in Washington, DC. — Anna Moneymaker/Getty Images

This is an excerpt from Al-Monitor Security, a weekly newsletter covering defense and conflict developments in the Middle East. To get Al-Monitor Security in your inbox, sign up here.

WASHINGTON — Calls are growing louder for members of Donald Trump's national security team to resign after The Atlantic published a leaked group chat from the messaging app Signal, in which top officials discussed details of upcoming US airstrikes in Yemen.

Scrutiny on Capitol Hill shifted over the course of the week from Trump’s national security adviser, Mike Waltz — who, according to The Atlantic's Jeffrey Goldberg, had unknowingly granted him access to the chat — to Defense Secretary Pete Hegseth.

Meanwhile, Director of National Intelligence Tulsi Gabbard, seated alongside CIA Director John Ratcliffe, testified under oath to Senate lawmakers this week that no classified information had been shared in the leaked chat. 

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