ere not controlled by Cuban stockholders were not allowed to operate plantations, and sugar production was de-emphasized in favor of food crops. In 1960 the Castro government nationalized, or took over ownership of, an estimated $1 billion in properties owned by U.S. companies and citizens, and the Eisenhower administration imposed a trade embargo. When Castro began to proclaim his belief in Communism, Cuba became part of the Cold War, or struggle between the United States and its allies and the nations led by the USSR that involved intense economic and diplomatic battles but not direct military conflict. Many Cubans fled to the United States. During the Eisenhower administration the Central Intelligence Agency (CIA) had begun to train Cuban exiles secretly for an invasion of Cuba. When Kennedy became president, he approved the invasion. In April 1961 more than 1000 Cuban exiles made an amphibious landing in Cuba at a place called the Bay of Pigs. Their plan was to move inland and join with anti-Castro forces to stage a revolt simultaneously, but instead Castro's forces were there to meet the invaders. The revolt in the interior did not happen, and air support, promised by the CIA, never came. The exiles were defeated and the survivors were taken prisoner. On December 25, 1962, 1113 prisoners were released in exchange for food and medical supplies valued at a total of approximately $53 million. Most other Latin American countries had the same bad social, economic, and political conditions that had led to Castro's success in Cuba. Many of these nations seemed ripe for a revolution that could easily be exploited by the Communists. Upon taking office, President Kennedy looked for a program that would accelerate change in Latin America by strengthening democratic institutions. In March 1961 he introduced the Alliance for Progress, and in August it was established by the charter of Punte del Este. The Alliance for...