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

President Trump announced a major shakeup in his national security team on Thursday, tapping Mike Waltz to be his United ...

Secretary of State Marco Rubio spoke with top officials from both countries in an effort to avoid another conflict over the ...

US President Donald Trump on Thursday named Secretary of State Marco Rubio as his new national security adviser, and also ...