President Trump nominates Mike Waltz for U.N. ambassador, following his departure as national security adviser.

President Trump has nominated his national security adviser, Mike Waltz, for the role of United Nations ambassador. Secretary of State Marco Rubio will serve as acting national security adviser while continuing his role at the State Department. This follows Waltz and his deputy's departure from the administration and Waltz's controversy for adding a journalist to a private chat discussing military plans. The move mirrors a precedent set by Henry Kissinger from 1973 to 1975.