Waltz, who inadvertently added a reporter to a Signal chat with top Trump officials discussing a U.S. military strike on Houthi rebels in Yemen, was nominated to be the U.S. ambassador to the U.N.

President Trump removed Mike Waltz as national security adviser Thursday amid fallout from what’s known as “Signalgate,” in ...

Former National Security Advisor Michael Waltz in the Cabinet Room of the White House in March. Shawn Thew / EPA / Bloomberg ...

John Bolton countered JD Vance's framing of national security adviser Mike Waltz's role change as a "promotion." ...

All three Republicans have either had to bow out of consideration or have been subject to criticism while on the job.

Former National Security Advisor Jake Sullivan joins Morning Joe to discuss President Trump nominating outgoing national ...

Mike Waltz has left his post as President Trump's national security adviser weeks after he accidentally added a reporter to a ...

President Donald Trump's outgoing national security adviser Mike Waltz was photographed peaking at his phone under the table ...

National security adviser Mike Waltz and his deputy, Alex Wong, will be leaving their posts in the Trump White House, ...

President Donald Trump says he is nominating national security adviser Mike Waltz as United Nations ambassador while ...

Welcome to the online version of From the Politics Desk, an evening newsletter that brings you the NBC News Politics team’s ...

Before the 'Signalgate' scandal and his time as national security advisor, former Green Beret Mike Waltz was a Florida ...