In January 1961, Castro ordered Havana's U.S. Embassy to reduce its 300-member staff, suspecting that many of them were spies.
The U.S. responded by ending diplomatic relations, and it increased CIA funding for exiled dissidents; these militants began attacking ships that traded with Cuba, and bombed factories, shops, and sugar mills.
Both President Eisenhower and his successor President Kennedy supported a CIA plan to aid a dissident militia, the Democratic Revolutionary Front, to invade Cuba and overthrow Castro; the plan resulted in the Bay of Pigs Invasion in April 1961.
On 15 April, CIA-supplied B-26s bombed three Cuban military airfields; the U.S. announced that the perpetrators were defecting Cuban air force pilots, but Castro exposed these claims as false flag misinformation.
Fearing invasion, he ordered the arrest of between 20,000 and 100,000 suspected counter-revolutionaries, publicly proclaiming, "What the imperialists cannot forgive us, is that we have made a Socialist revolution under their noses", his first announcement that the government was socialist.

The CIA and the Democratic Revolutionary Front had based a 1,400-strong army, Brigade 2506, in Nicaragua.
On the night of 16 to 17 April, Brigade 2506 landed along Cuba's Bay of Pigs and engaged in a firefight with a local revolutionary militia.
Castro ordered Captain José Ramón Fernández to launch the counter-offensive, before taking personal control of it.
After bombing the invaders' ships and bringing in reinforcements, Castro forced the Brigade to surrender on 20 April.
He ordered the 1189 captured rebels to be interrogated by a panel of journalists on live television, personally taking over the questioning on 25 April.
Fourteen were put on trial for crimes allegedly committed before the revolution, while the others were returned to the U.S. in exchange for medicine and food valued at U.S. $25 million.
Castro's victory reverberated across the world, especially in Latin America, but it also increased internal opposition primarily among the middle-class Cubans who had been detained in the run-up to the invasion.
Although most were freed within a few days, many fled to the U.S., establishing themselves in Florida.

Consolidating "Socialist Cuba", Castro united the MR-26-7, PSP and Revolutionary Directorate into a governing party based on the Leninist principle of democratic centralism: the Integrated Revolutionary Organizations (Organizaciones Revolucionarias Integradas – ORI), renamed the United Party of the Cuban Socialist Revolution (PURSC) in 1962.
Although the USSR was hesitant regarding Castro's embrace of socialism, relations with the Soviets deepened.
Castro sent Fidelito for a Moscow schooling, Soviet technicians arrived on the island, and Castro was awarded the Lenin Peace Prize.
In December 1961, Castro admitted that he had been a Marxist–Leninist for years, and in his Second Declaration of Havana he called on Latin America to rise up in revolution.
In response, the U.S. successfully pushed the Organization of American States to expel Cuba; the Soviets privately reprimanded Castro for recklessness, although he received praise from China.
Despite their ideological affinity with China, in the Sino-Soviet split, Cuba allied with the wealthier Soviets, who offered economic and military aid.

The ORI began shaping Cuba using the Soviet model, persecuting political opponents and perceived social deviants such as prostitutes and homosexuals; Castro considered same-sex sexual activity a bourgeois trait.
Gay men were forced into the Military Units to Aid Production (Unidades Militares de Ayuda a la Producción – UMAP); after many revolutionary intellectuals decried this move, the UMAP camps were closed in 1967, although gay men continued to be imprisoned.
By 1962, Cuba's economy was in steep decline, a result of poor economic management and low productivity coupled with the U.S. trade embargo.
Food shortages led to rationing, resulting in protests in Cárdenas.
Security reports indicated that many Cubans associated austerity with the "Old Communists" of the
In January 1961, Castro ordered Havana's U.S. Embassy to reduce its 300-member staff, suspecting that many of them were spies. The U.S. responded by ending diplomatic relations, and it increased CIA funding for exiled dissidents; these militants began attacking ships that traded with Cuba, and bombed factories, shops, and sugar mills. Both President Eisenhower and his successor President Kennedy supported a CIA plan to aid a dissident militia, the Democratic Revolutionary Front, to invade Cuba and overthrow Castro; the plan resulted in the Bay of Pigs Invasion in April 1961. On 15 April, CIA-supplied B-26s bombed three Cuban military airfields; the U.S. announced that the perpetrators were defecting Cuban air force pilots, but Castro exposed these claims as false flag misinformation. Fearing invasion, he ordered the arrest of between 20,000 and 100,000 suspected counter-revolutionaries, publicly proclaiming, "What the imperialists cannot forgive us, is that we have made a Socialist revolution under their noses", his first announcement that the government was socialist.
The CIA and the Democratic Revolutionary Front had based a 1,400-strong army, Brigade 2506, in Nicaragua. On the night of 16 to 17 April, Brigade 2506 landed along Cuba's Bay of Pigs and engaged in a firefight with a local revolutionary militia. Castro ordered Captain José Ramón Fernández to launch the counter-offensive, before taking personal control of it. After bombing the invaders' ships and bringing in reinforcements, Castro forced the Brigade to surrender on 20 April. He ordered the 1189 captured rebels to be interrogated by a panel of journalists on live television, personally taking over the questioning on 25 April. Fourteen were put on trial for crimes allegedly committed before the revolution, while the others were returned to the U.S. in exchange for medicine and food valued at U.S. $25 million. Castro's victory reverberated across the world, especially in Latin America, but it also increased internal opposition primarily among the middle-class Cubans who had been detained in the run-up to the invasion. Although most were freed within a few days, many fled to the U.S., establishing themselves in Florida.
Consolidating "Socialist Cuba", Castro united the MR-26-7, PSP and Revolutionary Directorate into a governing party based on the Leninist principle of democratic centralism: the Integrated Revolutionary Organizations (Organizaciones Revolucionarias Integradas – ORI), renamed the United Party of the Cuban Socialist Revolution (PURSC) in 1962. Although the USSR was hesitant regarding Castro's embrace of socialism, relations with the Soviets deepened. Castro sent Fidelito for a Moscow schooling, Soviet technicians arrived on the island, and Castro was awarded the Lenin Peace Prize. In December 1961, Castro admitted that he had been a Marxist–Leninist for years, and in his Second Declaration of Havana he called on Latin America to rise up in revolution. In response, the U.S. successfully pushed the Organization of American States to expel Cuba; the Soviets privately reprimanded Castro for recklessness, although he received praise from China. Despite their ideological affinity with China, in the Sino-Soviet split, Cuba allied with the wealthier Soviets, who offered economic and military aid.
The ORI began shaping Cuba using the Soviet model, persecuting political opponents and perceived social deviants such as prostitutes and homosexuals; Castro considered same-sex sexual activity a bourgeois trait. Gay men were forced into the Military Units to Aid Production (Unidades Militares de Ayuda a la Producción – UMAP); after many revolutionary intellectuals decried this move, the UMAP camps were closed in 1967, although gay men continued to be imprisoned. By 1962, Cuba's economy was in steep decline, a result of poor economic management and low productivity coupled with the U.S. trade embargo. Food shortages led to rationing, resulting in protests in Cárdenas. Security reports indicated that many Cubans associated austerity with the "Old Communists" of the
Fidel Castro