Signalgate was the national security adviser’s most glaring mistake. But his problems ran deeper. After Michael Waltz, the ...

Fired National Security Adviser Mike Waltz can‘t help but leak his Signal chats. Waltz, whose downfall was precipitated by ...

Mike Waltz, the national security adviser for President Donald Trump, is seen in photos using Signal during a Cabinet meeting ...

Waltz's deputy, Alex Wong, who was also ousted this week, reportedly remains at the National Security Council.

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

Reports say President Donald Trump will nominate National Security adviser Mike Waltz to become the nation's ambassador to ...

The images, captured by Reuters, show Mike Waltz, the former national security adviser, using the TM SGNL app, which allows ...

Waltz came under scrutiny after revelations that he added a journalist to a private text chain about military operations.

The Trump adviser responsible for the Signal group chat that became a national security scandal is being replaced and ...

President Trump recently discouraged the use of the Signal app after controversy over a group chat of administration ...

"I think it will be a brutal confirmation hearing," Sen. Mark Warner said of Mike Waltz. "I think he's going to have tough ...