National Security Adviser Mike Waltz used his personal Gmail for government communications, sparking security concerns. Reports indicate he discussed military plans on his personal email, despite denying the use of Gmail for classified information.

The White House considers the Signal chat leak case "closed," press secretary Karoline Leavitt told the media Monday.

Although Trump decided not to fire his national security adviser over the Signal group chat, Waltz’s position is tenuous, officials say.

Given the first day of the Houthi campaign went off without a hitch, national security adviser Mike Waltz’s errant invite gaffe might have been written off as a minor glitch. Except, Defense Secretary Pete Hegseth came out swinging.

In public, President Trump has defended his national security adviser. But behind the scenes, he has been casting around for advice.