The top Democrat on the Senate Foreign Relations Committee is calling on Secretary of State Marco Rubio to prioritize U.S.

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

May 1 (UPI) -- An American citizen detained in Belarus has been released, according to Secretary of State Marco Rubio.

Secretary of State Marco Rubio threatened again to walk away from mediation unless Russia and Ukraine put forward "concrete ...

Administration officials including Marco Rubio and Kristi Noem championed the law during President Trump's first term.

The ousting of national security adviser Mike Waltz triggered a major shake-up in President Trump’s White House team, which ...