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Marco Rubio's Transformation from Trump Critic to Top Diplomat

Opinion
June 12, 2026 · 3:12 AM

As a Florida senator, Marco Rubio seemed to hold an opposing world view to Donald Trump—on Russia-Ukraine, China, USAID, and more. He notably called Trump a "con man," and Trump in turn dubbed him "little Marco." Now, as Trump's Secretary of State, Rubio has undergone a dramatic transformation.

This episode of The Global Story from BBC News examines Rubio's political journey, his past clashes with Trump, and how he now wields influence over U.S. foreign policy. The podcast explores his views on key conflicts, alliances, and whether he could one day become president.

Who is Marco Rubio?

Marco Rubio is a Cuban-American politician who rose to prominence as a Tea Party favorite. He served as Speaker of the Florida House before being elected to the U.S. Senate in 2010. Known for his hawkish foreign policy stance, Rubio has been a vocal critic of authoritarian regimes.

How did he get into politics?

Rubio's political career began in the Florida House of Representatives, where he quickly ascended to Speaker. His compelling personal story—the son of Cuban immigrants—helped him connect with voters. In 2010, he won a Senate seat with strong support from the Tea Party movement.

Why did Trump and Rubio not get on?

During the 2016 Republican primary, Rubio and Trump traded insults. Rubio called Trump a "con artist," while Trump mocked him as "little Marco." Their feud seemed irreconcilable, but political alliances can shift.

Is Rubio influencing US policy?

Now as Secretary of State, Rubio is a key figure in shaping Trump's foreign agenda. He has become a staunch defender of the administration's policies, including on China and Ukraine. Observers note that his influence may be growing as he aligns more closely with Trump's worldview.

Rubio's view on foreign conflicts

Rubio has been a consistent supporter of Ukraine in its war against Russia, though he now echoes Trump's call for a swift negotiated end. On China, he advocates for a tough stance, aligning with Trump's trade and technology restrictions.

What's Rubio's view on alliances?

Unlike Trump's skepticism of NATO, Rubio sees value in alliances but insists allies must pay their fair share. He has worked to reassure European partners while pushing them to increase defense spending.

Could Marco Rubio become the next US president?

Speculation is mounting that Rubio may position himself as Trump's eventual successor. His youth, experience, and newfound loyalty to Trump could make him a formidable candidate in 2028 or beyond.

For the full analysis, listen to the complete episode of The Global Story.