President Donald Trump defended National Security Advisor Michael Waltz during an ambassador meeting on Monday, as his administration faces fierce backlash over the recent Signal text chain leak.

The ousting of national security adviser Mike Waltz triggered a major shake-up in President Trump’s White House team, which is divided between America First-isolationists and traditional Republican ...

Sara Cook is a White House producer and multi-platform reporter for CBS News. She has covered three presidential campaigns and the Obama, Biden, and Trump administrations. National security adviser ...