President Trump is tapping national security adviser Mike Waltz to be his ambassador to the United Nations following reports ...

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

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

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

President Trump said Rubio will be acting National Security Adviser as he nominates Waltz to be the United States' ambassador ...

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

Senate Democrats are predicting that former National Security Adviser Mike Waltz will have a "brutal confirmation hearing" for his new role as U.N. ambassador.

Trump said that Secretary of State Marco Rubio would serve as interim national security advisor until a permanent replacement ...

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

Mike Waltz was removed as Trump's national security adviser and faces Senate confirmation as the new nominee to be ambassador to the U.N.

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