Cuban President Miguel Díaz-Canel on Saturday condemned the United States over what he described as a military attack on Venezuela and the capture of its president, calling the move “state terrorism” and a violation of international law.

Speaking before thousands of demonstrators gathered outside the U.S. Embassy in Havana, Díaz-Canel said the action amounted to “military aggression against a peaceful nation that poses no threat to the United States.”

The developments have raised alarm in Cuba, which relies on Venezuela for about 30 percent of its already limited oil supply in exchange for thousands of Cuban medical workers. Analysts warned that any disruption could further cripple Cuba’s fragile power grid and energy sector.

Cuban authorities also sought to reassure families of medical personnel in Venezuela, with the health ministry saying they were “well protected.”

Meanwhile, U.S. President Donald Trump said in an interview with the New York Post that he was not considering additional military action against Cuba, adding that the country was already struggling due to its reliance on Venezuela.

Cuba is in the midst of a prolonged economic crisis marked by shortages, high inflation, and widespread power outages, which the government largely blames on tightened U.S. sanctions and the long-standing trade embargo.