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

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

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

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

Ukraine wants to hold another meeting of national security advisors with the participation of the United States, Britain, ...

U.S. Secretary of State Marco Rubio stated Ukraine cannot force Russia to retreat to its 2014 borders, signaling a potential ...

Talks between the U.S., Ukraine and European officials to discuss ending Russia's war in Ukraine faltered as Secretary of ...

"This is a critical moment for Ukraine, Britain and Euro-Atlantic security," British Foreign Minister David Lammy said on ...

The Secretary of State's comments came after President Donald Trump questioned whether Russian President Vladimir Putin wants ...

A recent conversation between U.S. Secretary of State Marco Rubio and Russian Foreign Minister Sergey Lavrov signals a ...

Ukraine peace talks are teetering on the brink of chaos today after Marco Rubio snubbed a London summit with allies. The US ...

This is a "very critical week" that will determine whether the Trump administration continues with negotiations over ending the war, Secretary of State Marco Rubio said in an April 27 interview.