Mike Waltz, who played a central role in the Signal-gate, is now out as Trump's National Security Advisor, but why did he decide to resign?

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

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

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

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

President Donald Trump may have given an indication about the ultimate fate of former National Security Adviser Mike Waltz before effectively removing him from his post on Thursday. Two days earlier, ...

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

Two sources told The Washington Post that Trump had been frustrated with Waltz over foreign policy for months, and that ...

President Donald Trump has removed Mike Waltz as national security adviser and instead will nominate him for United Nations ...

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 ...

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

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 of interim national security adviser.