With four hats, including national security adviser, the former Trump rival is defying predictions he’d be a weak player.

In a dramatic shift in fortunes, Rubio is the first person since Henry Kissinger to be both secretary of state and national ...

Secretary of State Marco Rubio said foreign policy “belongs” to Trump. But Sen. Rubio had a long record of legislative ...

Marco Rubio's expanding resume underscores President Donald Trump's increasing trust in the former Florida senator, officials ...

WASHINGTON – A jolt of staff upheaval this week made Marco Rubio the first person in 50 years to hold the top two national ...

U.S. President Donald Trump termed rising tension between India and Pakistan a shame, while Secretary of State Marco Rubio ...

The disarray in Donald Trump’s foreign policy team is mirroring the chaos and uncertainty that he’s foisted upon the world in ...

Trump said he's nominating Michael Waltz to be ambassador to the United Nations, while Secretary of State Marco Rubio will ...

Rubio has made the Department of State virtually irrelevant, playing no role in key negotiations involving wars between ...

ANALYSIS — Secretary of State Marco Rubio’s declaration last week that ... prohibited any U.S. president from withdrawing from NATO without first obtaining the approval by a vote of two ...

US Secretary of State Marco Rubio and Acting German Foreign Minister Annalena Baerbock at the NATO Foreign Ministers' Meeting ...