CIA Director John Ratcliffe traveled to Havana on Thursday to meet with Cuban officials as the Trump administration ramps up pressure on the island. Ratcliffe’s trip came a day after Cuba announced it had run out of diesel and fuel oil due to the U.S. blockade and sanctions. For decades, the CIA has carried out covert operations inside Cuba, from orchestrating the Bay of Pigs invasion to repeatedly attempting to assassinate the late leader Fidel Castro. Meanwhile, the Trump administration is reportedly taking steps to indict Castro’s 94-year-old brother Raúl, who served as Cuban president from 2008 to 2018. In related news, more than 30 House Democrats have signed a letter urging the Trump administration not to take military action on Cuba and to lift the blockade.