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

The Trump administration ousted national security advisor Mike Waltz and other staffers with the National Security Council, ...

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

Waltz was on television as late as Thursday morning, promoting the administration’s agreement with Kyiv that would allow the ...

Mike Waltz, President Trump's national security advisor, is leaving the White House weeks after he accidentally added a ...

Waltz initiated a Signal chat that included details of attacks against Houthis. Now he’s Trump’s pick to be the American ...

President Donald Trump announced former national security advisor Mike Waltz as his choice to serve as ambassador to the U.N.

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

Mike Waltz has been nominated to serve as the next U.S. ambassador to the United Nations. In turn, there's renewed interest ...