The Communist Party of Cuba is the sole ruling party of Cuba. It was founded on 3 October 1965 as the successor to the United Party of the Cuban Socialist Revolution, which was in turn made up of the 26th of July Movement and Popular Socialist Party that seized power in Cuba after the 1959 Cuban Revolution. The party governs Cuba as an authoritarian one-party state where dissidence and political opposition are prohibited and repressed. The Cuban constitution ascribes the role of the party to be the "leading force of society and of the state".

The Bay of Pigs Invasion was a failed military landing operation on the southwestern coast of Cuba in 1961 by Cuban Democratic Revolutionary Front (DRF), consisting of Cuban exiles who opposed Fidel Castro's Cuban Revolution, clandestinely financed and directed by the U.S. government. The operation took place at the height of the Cold War, and its failure influenced relations between Cuba, the United States, and the Soviet Union.