President Donald Trump has held multiple Situation Room meetings as Israel-Iran conflict escalates, with Karoline Leavitt ...

The restaffing is being done at the direction of Secretary of State Marco Rubio, who has served as acting national security ...

Trump administration's NSC overhaul sees significant staff cuts, with Marco Rubio as interim advisor, sparking debate over how much staff reductions risk American national security.

What You Need To Know. President-elect Donald Trump has asked Florida Rep. Michael Waltz to be his national security adviser; The nod came despite simmering concerns on Capitol Hill about Trump ...

President Trump is tapping national security adviser Mike Waltz to be his ambassador to the United Nations following reports of his ouster in the midst of a controversy over a group text chat.

U.S. authorities warned in December of a sprawling Chinese hacking campaign designed to gain access to the texts and phone ...

He reiterated that messages on WhatsApp are end-to-end encrypted. “This [WhatsApp] is a higher level of security than most of ...

Defense Secretary Pete Hegseth is returning to Capitol Hill on Wednesday for the last in a series of often combative hearings ...