National security adviser Mike Waltz is out, with Secretary of State Marco Rubio replacing him on an interim basis. President ...

President Donald Trump has gone through his share of national security advisers. But he doesn't hold the record, yet.

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

Trump announced the moves shortly after news broke that Mike Waltz and his deputy Alex Wong were leaving the administration.

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 ...

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

Trump's appointment of Secretary of State Marco Rubio to temporarily replace Mike Waltz as national security advisor is the ...

Three months into his second term, President Trump is shaking up his national security team. National Security Adviser Mike Waltz, whose use of an unclassified messaging platform caused an uproar ...

The Trump administration fired NSC advisor Mike Waltz and other staffers with the national security counci, Fox News Digital ...

National security agencies across the Trump administration are ramping up investigations into alleged leaks to the news media, in some cases using polygraph tests that current and former officials ...