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

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.

Reaction to Waltz’s ‘promotion,’ Rubio now ‘secretary of everything,’ Air Force nominee grilled, Trump wants Veterans Day ...

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

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

President Donald Trump says he is nominating national security adviser Mike Waltz as United Nations ambassador while ...

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

Marco Rubio will be the first person since Henry Kissinger in the 1970s to hold the positions of secretary of state and ...

White House national security adviser Mike Waltz is leaving the administration just weeks after it was revealed he added a ...

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

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