Reports of Mike Waltz's exit as national security advisor focused on Signalgate, but President Donald Trump has nominated him to be U.N. ambassador.

President Donald Trump expressed frustration with national security adviser Michael Waltz Thursday in his conversations with people about his decision to withdraw Rep. Elise Stefanik’s nomination to ...

From the United Nations to the Sunday news shows, Ambassador Mike Waltz has emerged as a key player in advancing the White ...

Marco Rubio will stay on as secretary of state as well, Trump announced. In the first Cabinet shuffle of his second term, President Donald Trump on Thursday announced he's nominating Michael Waltz to ...