Fox News Digital took a look at whom President Donald Trump could select to replace former National Security Advisor Mike Waltz.

President Donald Trump said Thursday that he’s naming Secretary of State Marco Rubio as acting national security adviser to ...

Donald Trump has fired National Security Adviser Mike Waltz, who accidentally added a journalist to the group chat discussing ...

On a NewsNation town hall with Chris Cuomo, Stephen A. Smith, and Bill O’Reilly, Trump, who phoned in to the event, was asked ...

President Donald Trump said Thursday that he is nominating national security adviser Mike Waltz as United Nations ambassador ...