Trump announced the move in a post on Truth Social.

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

Mike Waltz leaving job to become new US ambassador to the United Nations as top diplomat Marco Rubio takes over NSC role in ...

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

Mr Waltz, 51, was thought to have been fired because he accidentally added a journalist to a group chat about plans to attack ...

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

For weeks, UN officials have been on tenterhooks waiting to see who US President Donald Trump would appoint as his ambassador ...

Secretary of State Marco Rubio has been named the interim national security adviser while he will continue to serve as the ...

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

Mike Waltz will be the next US ambassador to the UN. Read more at straitstimes.com. Read more at straitstimes.com.

President Donald Trump has nominated former National Security Adviser Mike Waltz to serve as the US Ambassador to the United ...

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