Retired Lt. Gen. H.R. McMaster, a CBS News contributor who served as national security adviser in President Trump's first ...

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

Mike Waltz has been nominated to serve as the next U.S. ambassador to the United Nations. In turn, there's renewed interest ...

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

Mike Waltz will be nominated as U.S. ambassador to the U.N., while Secretary of State Marco Rubio will take on the added role ...

The move by Trump comes after hours of speculation that Mike Waltz was about to lose his job as national security adviser.

WASHINGTON (AP) — White House national security adviser Mike Waltz is set to depart the administration, according to two ...

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

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

Donald Trump appointed Mike Waltz to be the next U.S. ambassador to the United Nations after stripping him of his original ...