Then-National Security Advisor Mike Waltz, left, and Secretary of Defense Pete Hegseth speak as President Donald Trump meets French President Emmanuel Macron at the White House in Washington, D.C ...

The FBI raided the home of former national security adviser John Bolton Friday morning at the order of FBI Director Kash Patel.

Military chiefs from the United States and a number of European countries on Thursday presented options to their national security advisers for providing security guarantees to Ukraine, officials said.

Former deputy national security advisor KT McFarland joins 'Fox & Friends' to discuss the feud over security guarantees for Ukraine and the Trump administration's decision to send warships near Venezuela.