A jolt of staff upheaval this week made Marco Rubio the first person in 50 years to hold the top two national security jobs ...

Germany’s foreign ministry hit back at U.S. Secretary of State Marco Rubio after he criticized the decision to classify the ...

Secretary of State Marco Rubio is taking over for Michael Waltz as National Security Adviser, but Rubio is keeping his main job and other roles.

U.S. Secretary of State Marco Rubio is set to replace Mike Waltz as the President's National Security Advisor, reports ...

The newly appointed interim national security adviser is preparing to stay in that role for up to six months, a person close ...

Rubio’s dual-hatted role comes on top of him serving as acting administrator of the largely shut down USAID and as acting ...