Trump and Rubio have both adopted a hard line towards Cuba's communist government. In May, the two renewed the possibility of US military intervention, with the threat gaining further significance after the Trump administration announced criminal charges against former Cuban leader Raúl Castro.

Cuba's new oil and gas law took effect Monday, allowing more private businesses and foreign investors to participate in the country's energy industry.

Secretary of State Marco Rubio says the campaign is engineered to make the government feel like there are no escape valves, which is how people in Cuba describe feeling.

Cuban energy minister denies link to fuel shipments intercepted by US, says oil imports by private firms insufficient.

Cuba-US tensions explained: the oil squeeze, sanctions on Cuba’s president, US charges against Raúl Castro, military odds and what could come next.

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On Oct. 28, the United Nations General Assembly is set to vote once again on Cuba's resolution condemning the American embargo.

Cuban authorities accused Maritza Lugo Fernandez, a Cuban national residing in Florida, of helping to organize the alleged plot. Some of those detained confessed they had trained on a farm property in Florida owned by Lugo Fernandez, who leads the Florida-based "Partido Democrático 30 de Noviembre," or the Democratic Party of November 30.

The U.S. has intercepted 90 Cuba-bound shipments of biodiesel, widening a U.S.-imposed oil blockade aimed at choking off illegally trafficked fuel.

The United States Army is reportedly taking preparatory steps for a possible operation involving Cuba, according to an exclusive published on Friday by CBS News, which obtained an internal Army message and spoke with several US officials familiar with the ...