President-elect Donald Trump has asked Florida Republican Rep. Mike Waltz to be his national security adviser, multiple sources told ABC News.

President-elect Donald Trump picked Florida congressman Mike Waltz as his national security advisor, a person familiar with the matter said, elevating the former Army Green Beret and combat ...

The national security adviser is a top aide to the president who plays a major role in foreign and national security policy decision-making.

Fox News Digital took a look at whom President Donald Trump could select to replace former national security advisor Mike Waltz.

President Donald Trump ousted Mike Waltz, who has lost the confidence of other administration officials, from his national security adviser position on Thursday.

Former Volusia-Flagler Congressman Mike Waltz is exiting his role as national security advisor after only 102 days on the job. The move comes a little more than a month after the scandal that ...

President Trump said Thursday he's nominating his national security advisor Mike Waltz to serve as United Nations ambassador in a major shake-up of his national security team.

Trump said he would make Secretary of State Marco Rubio his interim national security adviser. It's the first time since the Nixon era that one person will do both jobs.

Senate Democrats will get a chance to scrutinize President Trump’s former national security adviser over his mishandling of ...

Trump picks Rep. Mike Waltz, a former Green Beret, as national security adviser The Florida congressman emerged as a vocal Biden critic during Trump's campaign.