President Donald Trump has declared Cuba a national security threat, creating a new mechanism to impose tariffs on imports from any country that provides the island nation with oil.

Trump said on January 11 that after Maduro’s capture, no Venezuelan oil or money will go to Cuba, a close ally of Caracas. Trump’s comments on Tuesday warn of a failing economy on the island, which comes amid reports that his administration is aiming to remove the leadership as it pursues a foreign policy prioritizing the Western Hemisphere.

Cuba was previously importing about 35,000 barrels of oil a day from long-time ally Venezuela.