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 ...

Secretary of State Marco Rubio said there are reasons to be optimistic, but also asserted there are “other issues” on which ...

Trump told reporters that “Marco is right” that the U.S. wants the war to end, but “hopefully we won’t have to” walk away ...

The decision by Secretary of State Marco Rubio to pull out of the meeting and an objection by Ukraine’s leader to a key U.S.

Secretary of State Marco Rubio indicated Thursday that a peace deal between Russia and Ukraine is still on the horizon but noted the eastern European nations are still very much at odds with “no ...