In an interview with Axios, Rubio described the administration's strategy as one designed to eliminate what he called every possible "escape valve" available to Havana. The campaign represents one of the most aggressive U.S. efforts against Cuba in decades. Rubio argued the strategy is producing tangible results as Cuba struggles through one of the worst economic crises in its modern history. Administration officials say foreign businesses have increasingly withdrawn from Cuba because of the threat of U.S. sanctions. Looking ahead, Rubio said the administration has no intention of easing pressure and confirmed additional sanctions were imposed this week, with more expected in the coming months.