Marco Rubio has changed a lot since he ran for president in 2016. But his political evolution has made him uniquely qualified to be Trump's secretary of state.

US Secretary of State Marco Rubio on his first full day in office Tuesday warned jointly with Japan, India and Australia against coercive actions in Asia, in a veiled but clear warning to China over its actions at sea.

Marco Rubio has been confirmed by the Senate for secretary of state with unanimous support. Now comes the hard part that could make or break his tenure: retaining the full backing of his new boss, Donald Trump.

The Senate has confirmed Marco Rubio as secretary of state, giving President Donald Trump the first member of his Cabinet. The vote was unanimous.

“Congratulations to Marco Rubio on his confirmation as the new U.S. Secretary of State,” the Greek Ministry of Foreign Affairs stated in a post on Twitter. “Greece remains steadfast in its commitment to strengthening our strategic relations and the deep bonds that unite our nations,” the statement continued.

Secretary of State Marco Rubio pledged in his first remarks as top US diplomat to ensure that the agency he now leads isn’t left behind in shaping US foreign policy.

The joint statement with Quad partners stood in sharp contrast to Donald Trump’s frequent dismissal of US allies.

New US Secretary of State Marco Rubio on Wednesday promised steadfast support for Israel in a call with Prime Minister Benjamin Netanyahu two days after

New Secretary of State Marco Rubio said on Wednesday that he will rid the State Department of work on climate and "cultural" issues.

On Wednesday, a source at the Turkish Foreign Ministry stated that Minister Hakan Fidan and his U.S. counterpart, Marco Rubio, discussed the importance of coordination on regional affairs during a phone call.

Jaishankar was talking to reporters at the Indian embassy in Washington where he briefed them about his meeting with counterpart Rubio and the Quad foreign ministers’ meeting.