The new secretary of state took center stage in a diplomatic rift with Colombia over deportation flights, adding teeth to Trump's threats of sanctions.

Three cheers for President Trump issuing an executive order Thursday directing the “full and complete release of records relating to the assassination of President John F. Kennedy” as

A Taliban envoy cautioned U.S. Secretary of State Marco Rubio against rising tensions with threats of bounties on Afghan leaders.

Marco Rubio was confirmed by the Senate as secretary of state with unanimous support, Democrats joining Republicans in praising his acumen and judgment.

Rubio lost to Trump in 2016 but he’s living his best life as Secretary of State, approved unanimously by his Senate colleagues.

Sen. Marco Rubio, President-elect Donald Trump's pick for secretary of state, will face questions from his Senate colleagues on Wednesday morning.

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

Former U.S. senator from Florida Marco Rubio jumps into new role as secretary of state with flurry of phone calls, planned trip to Panama.

Florida Sen. Marco Rubio painted a dark vision of the consequences of America’s “unbalanced relationship” with China

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.

After taking the oath of office, Marco Rubio promised that every action taken by the State Department will be determined by the answers to three questions.

Rubio's appointment as secretary of state has been seen as sign that Trump plans to maintain a hard line on China.