A hacker managed to breach TeleMessage, a company that sells a modified version of Signal to the US government. Mike Waltz ...

National security adviser Mike Waltz is leaving his White House post, although soon after reports about his departure were ...

President Donald Trump has gone through his share of national security advisers. But he doesn't hold the record, yet.

President Donald Trump is replacing his National Security Adviser, Mike Waltz, and nominating him to be Ambassador to the ...

Waltz's exit comes just weeks after it was revealed he added a journalist to a Signal chat being used to discuss military ...

Weeks after the infamous Signal group chat controversy, Trump’s national security advisor was reported to be leaving his ...

Defense Secretary Pete Hegseth faces a Pentagon watchdog investigation over use of the Signal app to share details of planned ...

National security adviser Mike Waltz is leaving his post and will become America’s ambassador to the United Nations, marking ...

President Trump reportedly wasn’t “happy” about his national security adviser’s hawkish stance on striking Iran nuclear sites ...

Mike Waltz speaks during a television interview at the White House on Thursday before he was removed by President Trump as national security adviser. (Alex Brandon/AP) ...

Trump said that Secretary of State Marco Rubio would serve as interim national security advisor until a permanent replacement ...

Waltz was at the center of the Signal chat controversy, in which a journalist was accidentally included in a discussion of ...