National security adviser Mike Waltz is leaving his post and will become America’s ambassador to the United Nations, marking the first major shakeup of President Trump’s second administration.

President Donald Trump has nominated former national security adviser Mike Waltz to now serve as the U.S. ambassador to the United Nations. The move comes just hours after news broke that Waltz ...

WASHINGTON — President Donald Trump said Thursday he's nominating his national security adviser Mike Waltz to serve as United Nations ambassador in a major shake-up of his national security team.

Trump said he would make Secretary of State Marco Rubio his interim national security adviser. It's the first time since the Nixon era that one person will do both jobs.

Although Waltz has retained a role in the administration, his ouster as national security adviser makes him the first high-ranking official to depart a post since Trump's Jan. 20 inauguration.

WASHINGTON ― President Donald Trump shuffled his national security team on May 1, announcing he intends to move Mike Waltz from his role as national security adviser and nominate him as U.S ...

White House national security adviser Mike Waltz is set to depart the administration, according to two people familiar with the matter on Thursday, marking the first major staff shakeup of Presiden… ...

WASHINGTON (AP) — President Donald Trump said Thursday he’s nominating his national security adviser Mike Waltz to serve as United Nations ambassador in a major shake-up of his national ...

Donald Trump appointed Mike Waltz to be the next U.S. ambassador to the United Nations after stripping him of his original title as the White House national security adviser ...