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

Surprise! Rather than firing national security adviser Michael Waltz after Signalgate, President Trump is sending him through ...

National Security Advisor Mike Waltz and other National Security Council staffers were ousted from their office on Thursday, ...

Trump tapped Michael Waltz, who he had just ousted as national security adviser, to be the next ambassador to the U.N. on ...

Waltz leaves his post weeks after he came under heavy scrutiny after inadvertently adding a journalist to a Signal chat where ...