May 20, 2025
WASHINGTON (AP) — President Donald Trump said Thursday that he is nominating national security adviser Mike Waltz as United Nations ambassador while Secretary of State Marco Rubio would take over Waltz’s duties in an interim role.
Waltz has been under scrutiny for weeks after reporting from The Atlantic that he had mistakenly added the magazine's editor-in-chief to a Signal chat being used to discuss military plans.
“I am pleased to announce that I will be nominating Mike Waltz to be the next United States Ambassador to the United Nations. From his time in uniform on the battlefield, in Congress and, as my National Security Advisor, Mike Waltz has worked hard to put our Nation’s Interests first,” Trump wrote on social media.
“In the interim, Secretary of State Marco Rubio will serve as National Security Advisor, while continuing his strong leadership at the State Department. Together, we will continue to fight tirelessly to Make America, and the World, SAFE AGAIN.”
There is precedent for the secretary of state to serve simultaneously as national security adviser. Henry Kissinger held both positions from 1973 to 1975.
It's not clear how long Rubio will hold both jobs.
Vice President JD Vance pushed back on characterizations that Waltz was ousted.
“The media wants to frame this as a firing. Donald Trump has fired a lot of people,” Vance said in an interview with Bret Baier of Fox News Channel. "He doesn’t give them Senate-confirmed appointments afterwards.”
“I’m deeply honored to continue my service to President Trump and our great nation,” Waltz said Thursday.
His shift from national security adviser to U.N. ambassador nominee means he will now have to face a Senate confirmation hearing.
Trump is believed to be weighing several senior aides to eventually take on the national security adviser role, including special envoys Steve Witkoff and Richard Grenell, National Security Council senior director for counterterrorism Sebastian Gorka and senior State Department official Michael Anton, according to several people familiar with the ongoing deliberations.
Witkoff, a fellow New York City real estate maverick who has known Trump for years, has played a key role in negotiations to end the Russia-Ukraine war and the Israel-Hamas conflict and has been the administration's chief interlocutor in the Iran nuclear talks launched last month.
Grenell, in addition to being Trump’s envoy for special missions, is serving as the interim president at the Kennedy Center. He served as ambassador to Germany during Trump’s first administration, was special presidential envoy for Serbia and Kosovo peace negotiations, and did a stint as acting director of national intelligence. He’s also weighing running in next year’s California governor’s race.
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This story has been updated to include Waltz's nomination as U.N. ambassador.
