U.S. National Security Adviser Mike Waltz has resigned from his post.
Media reports also confirm that his deputy, Alex Wong, will step down from his role.
This comes just weeks after Waltz took responsibility for a group chat in which senior officials discussed planned military strikes in Yemen—while accidentally including a journalist.
He is the first high-profile member of the administration to resign during Trump’s second term.
Michael Waltz, formerly a congressman from Florida’s 6th district, was one of Donald Trump’s first appointments after his re-election. He had served in Congress from 2019 until resigning in January to assume the national security role.
In Congress, Waltz was a member of the Intelligence, Armed Services, and Foreign Affairs Committees. He previously served as an officer in the U.S. Army and National Guard.
In late March, The Atlantic editor-in-chief Jeffrey Goldberg reported that he had been accidentally added to a Signal group chat by a user named Mike Waltz.
The chat included top Trump administration officials, identified as Vice President JD Vance and Secretary of Defense Pete Hegseth.
Goldberg said he viewed classified U.S. military plans for airstrikes in Yemen—including weapons packages, targets, and timing—just two hours before the planned bombing.
Initially, Waltz claimed he didn’t know how Goldberg had joined the chat, but later accepted “full responsibility” in a Fox News interview, admitting he was the one who had “created the group.”
Sources told CBS News and The Guardian that Waltz had tried to add a senior spokesperson to the Signal chat but mistakenly added Goldberg instead.
Investigators reportedly found that Goldberg’s number had been saved on Waltz’s phone by mistake as an alternate contact for National Security Spokesman Brian Hughes.
President Trump later said he would “review” the matter.
