National security adviser Mike Waltz is leaving his White House post, although soon after reports about his departure were published, President Trump announced he plans to nominate him to be ambassador to the United Nations.

President Donald Trump has gone through his share of national security advisers. But he doesn't hold the record, yet.

President Donald Trump floated his deputy chief of staff, Stephen Miller, as an option to be his next national security adviser after he ousted Mike Waltz from the role last week. Speaking to reporters aboard Air Force One,