Secretary of State Marco Rubio was far less chatty than other officials in the controversial Signal discussion on U.S. airstrikes in Yemen.

U.S. Secretary of State Marco Rubio said on Wednesday he had been assured none of the information discussed on a messaging app about US attacks on Yemen's Houthis where a journalist was mistakenly added to the chain threatened the operation or the lives of the service members.

This thing was set up for purposes of coordinating how everyone was going to call. You know, when these things happen, I need to call foreign ministers, especially of our close allies. We need to notify members of Congress.

China's government bristled Friday at the strengthening ties between Guyana and the United States in online comments a day after a visit to the South American country by U.S. Secretary of State Marco Rubio.

Top US diplomat Marco Rubio on Thursday issued a stern warning against Venezuela if it attacks its newly oil-rich neighbor Guyana, brandishing the power of the US military to protect

Secretary of State Marco Rubio heads Thursday to Guyana to offer to put the newly oil-rich nation under the US security umbrella as neighboring Venezuela asserts claims.