President Donald Trump's National Security Advisor Mike Waltz and other staffers are out at the National Security Council, ...

Sources familiar with the situation said that National Security Advisor and former Florida congressman Mike Waltz will be stepping down. Here's why.

Waltz had been under pressure since the editor-in-chief of the Atlantic Magazine revealed in March that Waltz had mistakenly ...

Waltz was at the center of the Signal chat controversy, where a journalist was accidentally included in a discussion of sensitive military information.

Donald Trump’s dismissal of former National Security Adviser Mike Waltz on Thursday was immediately felt on social media.

Donald Trump's national security advisor is to leave his post -- the first major departure of the president's new term -- ...