The U.S. Embassy in Trinidad and Tobago is cautioning Americans to stay away from U.S. government facilities on the twin-island nation.

Trump has moved significant U.S. military assets, including eight warships, about 10,000 troops, a nuclear-power submarine and fighter jets, to the southern Caribbean, close to Venezuela. Earlier this week, the president confirmed he authorized the Central Intelligence Agency (CIA) to carry out covert operations in Venezuela.

The operation is the sixth known attack on alleged drug smugglers in the Caribbean, and the first known to have left some people alive.

The U.S. Senate is poised to take up a bipartisan bill aimed at preventing the Trump administration from launching a full-on war with Venezuela over alleged ties to the international drug trade.

Legal experts say U.S. strikes against alleged members of Latin American drug cartels are pushing the bounds of international law.

On Wednesday three B-52 bombers took off from Barksdale Air Force Base in Louisiana and flew for hours near the coast of Venezuela, according to flight tracking data, in what appears to be a major show of force by Trump.

The U.S. military flew three B-52 bombers on missions near the coast of Venezuela on Wednesday, as the Trump administration continues to exert pressure on the country.

Democratic Sen. Tim Kaine of Virginia says new legislation is needed to prevent the Trump administration's escalating actions against Venezuela from leading to war.

Venezuelan government officials floated a plan in which President Nicolás Maduro would eventually leave office, a bid aimed at easing mounting U.S. pressure on the government in Caracas.