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.

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.

: COMMENTARY In Guyana, the Trump administration finally offered hemispheric partnership instead of extortion — and rattled China. President Trump just trashed that vibe with a harsh, dubious tariff.

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.

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 ...

Secretary of State Marco Rubio will travel next week to the Caribbean, where he will meet with several leaders as part of a three-nation tour, three sources said.

Venezuela’s army is far larger than Guyana’s. But Caracas might achieve better results with deniable “gray zone” attacks ...