Venezuela's president, Nicolás Maduro, slammed U.S. Secretary of State Marco Rubio on Friday, calling the official an "imbecile" during Rubio's visit to neighboring Guyana ...

Top US diplomat Marco Rubio on Thursday bluntly warned Venezuela against attacking its oil-rich neighbor Guyana, brandishing the power of the US military to protect the small South American nation.

U.S. Secretary of State Marco Rubio will visit Jamaica, Guyana and Suriname on March 26-27, a State Department spokesperson told reporters on Monday.

Secretary of State Marco Rubio was visiting Guyana amid ExxonMobil’s oil production there. Venezuela has asserted claims to a large region of the country. Mr. Rubio later flew to Suriname.

Emphasizing the global reach of the U.S. Navy, Secretary of State Marco Rubio issued a stark warning Thursday to Venezuelan leader Nicolás Maduro, cautioning against any military aggression toward ...