Secretary of State Marco Rubio's new job as national security adviser sets the former Donald Trump rival up for a bigger role ...

Secretary Rubio’s new role as national security adviser may be unsustainable, according to foreign policy experts.

Secretary of State Marco Rubio indicated Thursday that a peace deal between Russia and Ukraine is still on the horizon but ...

FOX News host Sean Hannity asked Secretary of State Marco Rubio for an update on U.S. attempts to get Russia and Ukraine to ...

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

Germany’s foreign ministry hit back at U.S. Secretary of State Marco Rubio after he criticized the decision to classify the ...

Ukraine minerals agreement was paved with challenges. Those included an unprecedented Oval Office blowout, hundreds of ...

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

Secretary of State Marco Rubio’s new assignment as President Trump’s interim national security adviser brings him deeper into ...

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

As Secretary of State, Marco Rubio juggles multiple roles while addressing international conflicts and implementing key ...