The Trump administration began implementing a policy of maximum pressure on Cuba after its January 3 overthrow of Venezuela's socialist president Nicolas Maduro, Cuba's foremost backer. The oil blockade has aggravated the country's worst economic and energy crisis in decades, leading to warnings of a humanitarian disaster.

U.S. officials urge Cubans for economic reforms in Havana talks, signaling potential diplomatic progress amid rising tensions.

A Cuban Foreign Ministry official said exchange with Washington was 'respectful and professional' and devoid of threats.

The Cuban government confirmed it recently held talks with a United States delegation, following U.S. media reports that envoys arrived there.