Marco Rubio will be the first person, with the exception of Henry Kissinger, to hold the dual roles of secretary of state and national security adviser at the same time.

While many people have served in both positions in the course of their careers, including Colin Powell and Condoleezza Rice, they have always done so at different times.

On Thursday, President Donald Trump posted on his Truth Social platform that he is nominating Mike Waltz to be US ambassador to the United Nations and that Rubio would be taking over as national security adviser in the interim.

Read more at Newsmax© 2025 Newsmax. All rights reserved.