The Trump administration ousted national security advisor Mike Waltz and other staffers with the National Security Council, ...

President Donald Trump announced former national security advisor Mike Waltz as his choice to serve as ambassador to the U.N.

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

US President Donald Trump on Thursday announced the replacement of national security adviser Mike Waltz, stating that he would be nominated as the nex.

Trumps White House purge is making headlines after he abruptly fired National Security Adviser Mike Waltz. Reports suggest a wave of staff dismissals could follow as Trump looks to tighten loyalty ...

The Trump adviser responsible for the Signal group chat that became a national security scandal is being replaced and nominated as the next US ambassador at the United Nations.

The Signal group chat scandal and Waltz’s hawkish stance on Iran are being touted as the reasons for his ouster as NSA.

President Donald Trump's outgoing national security adviser Mike Waltz was photographed using Signal on his phone during Wednesday's Cabinet meeting.

Welcome to the online version of From the Politics Desk, an evening newsletter that brings you the NBC News Politics team’s latest reporting and analysis from the White House, C ...

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

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

WASHINGTON − Mike Waltz is out as President Donald Trump's national security adviser and is instead his new nominee for ambassador to the United Nations in a major shake-up of Trump's national ...