With Donald Trump’s announcement that he will tap Sen. Marco Rubio for secretary of state, the Florida Republican is poised to become America’s top diplomat in the next administration.

Rubio, a senator since 2011, is a more traditional foreign policy hawk compared with Trump — having built his political identity around support for upending autocratic governments from Latin America to the Middle East to Asia. But in recent years, Rubio’s neoconservative positions have softened, and he has increasingly aligned with Trump, who has promised to reverse what he says is a lack of respect for the United States on the global stage with his “America First” approach.

Trump’s second presidency

The transition: Follow live updates on the transition to Donald Trump’s second presidency. We’re tracking the people Trump has picked or is considering to fill his Cabinet and key positions in his administration.

What we know: So far, Trump named Susie Wiles to serve as White House chief of staff, Gov. Kristi Noem will be homeland security secretary, Sen. Marco Rubio will be secretary of State, and Fox News host Pete Hegseth will serve as secretary of defense. Trump also picked Mike Huckabee to be U.S. ambassador to Israel and Rep. Elise Stefanik (R-New York) to be U.S. ambassador.

What could happen: Here’s what a second Trump presidency could mean for America and key global issues. Also, see how women feel about another Trump term and how Project 2025 could reshape America under a Trump presidency.