U.S.-Cuba relations have been complex and often tense since the Cuban Revolution in 1959, which led to the establishment of a communist government under Fidel Castro. The United States responded with economic sanctions and a trade embargo, aiming to isolate Cuba politically and economically. In recent years, there have been attempts to improve relations, particularly during the administration of Barack Obama, who eased some restrictions and reestablished diplomatic ties in 2015. However, relations have fluctuated again, with subsequent administrations reinstating some sanctions and limiting travel and trade, reflecting ongoing political disagreements.