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
CIA activities in Angola before Congress and wrote in his memoirs. Cuba made the decision to send troops without informing the Soviet Union and deployed them, contrary to what has been widely alleged, without any Soviet assistance for the first two months. "In a meeting including President Ford, Secretary of State Kissinger, Secretary of Defense James Schlesinger, and CIA Director William Colby among others, U.S. intervention in Angola's civil war is discussed. In response to evidence of Soviet aid to the MPLA, Secretary Schlesinger says, "we might wish to encourage the disintegration of Angola.” Kissinger describes two meetings of the 40 Committee oversight group