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

U.S. Secretary of State Marco Rubio said on May 17 that the Vatican could serve as a venue for future peace talks between ...

Renouncing Crimea for the sake of peace with Russia is impossible. At the same time, Ukraine is ready to discuss humanitarian ...

Washington has given Moscow time to make progress in peace talks, but patience is running out — sanctions decisions are ...

Secretary of State Marco Rubio said on Sunday that the Trump administration expects to figure out "pretty soon" if Russia is ...

Ukraine and Russia have both sent delegations to Turkey, but Trump says nothing will happen until he meets Putin.

Rubio, once a Trump rival, has scrapped his old foreign policy playbook and courted MAGA dignitaries while avoiding the ...