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

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

Secretary of State, National Security Advisor, USAID Director, and acting National Archivist Marco Rubio spoke last night at ...

Secretary of State Marco Rubio now holds four top roles in the Trump administration, raising questions about power, trust – and whether one man can do it all.

As Rubio ascends in Trump’s administration, those close to him and Vance downplay any talk of a clash between the two men, who have become close friends and ideological allies.

Marco Rubio has gone from bitter presidential rival to President Donald Trump’s go-to guy,” according to a Fox News report.

US Secretary of State expresses hope for engagement towards a peaceful resolutionUrges on both countries to exercise ‘maximum ...

Some Trump officials are filling two, three, even four roles simultaneously. The personnel practice "just makes no sense," says a White House expert.

President Donald Trump has been shaking up how the United States does business in the world. But with the latest violence ...

The Trump administration is signaling it has no appetite for a full-scale conflict between the two nuclear powers ...