Foreign relations of Cuba needed oil. Relations between the countries deteriorated rapidly. In April 1961, following air attacks preparing for the Bay of Pigs Invasion by CIA-trained Cuban exiles, prime minister Fidel Castro declared Cuba to be a socialist republic, and moved quickly to develop the growing relations between Cuba and the Soviet Union. In 1962, Cuba was expelled from the Organization of American States. Shortly afterwards, many nations throughout Latin America broke ties with Cuba, leaving the island increasingly isolated in the region and dependent on Soviet trade and cooperation. Following the establishment of diplomatic ties, and after the Cuban missile crisis in
Koreans in Cuba bringing their henequen-cutting skills from Mexico soon showed their good skills and productivity which allowed some to rise to specialized fieldwork and even become trainers and supervisors. Most Korean Cubans today speak the Spanish language. A Cuba-Korea culture center was built in 1921 that taught Korean writing and history in an attempt to remind the descendants of their heritage. But lack of funding shuttered the center and now it’s hard to find a descendant of the Korean immigrants who can speak the Korean language. Koreans in Cuba Korean Cubans (, "Hangukgye kubain") are citizens of Cuba of Korean ancestry. Most