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

Secretary of State Marco Rubio has been thrown into two top national security roles at once after President Donald Trump ...

The newly appointed interim national security adviser is preparing to stay in that role for up to six months, a person close ...

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

The ousting of national security adviser Mike Waltz triggered a major shake-up in President Trump’s White House team, which ...

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

Trump said he's nominating Michael Waltz to be ambassador to the United Nations, while Secretary of State Marco Rubio will ...

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

President Donald Trump's National Security Advisor Mike Waltz and other staffers are out at the National Security Council, ...

There is a very real possibility that Trump keeps Rubio as both secretary of state and national security adviser, according ...

President Donald Trump said that he’s naming Secretary of State Marco Rubio as acting national security adviser to replace ...

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