WASHINGTON—Secretary of State Marco Rubio has been thrown into two top national security jobs at once as President Donald Trump presses forward with his top-to-bottom revamp of US foreign policy ...

WASHINGTON—US Secretary of State Marco Rubio travels this week to a gathering of top diplomats from Nato countries and is sure to find allies that are alarmed, angered and confused by the Trump ...

The Trump administration has given 36 countries, most of them in Africa, a Wednesday deadline to commit to improving vetting ...

U.S. officials say the State Department has halted the scheduling of new visa interviews for foreign students hoping to study ...