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 Canada program was cancelled in 1959, many believed that the CIA was partly responsible, fearing Canadian intrusion into aerospace dominance. In 1961, the CIA wrote an intelligence estimate titled "Trends in Canadian Foreign Policy" which suggested that the Conservative government of John Diefenbaker "might take Canada in a divergent direction" and seek "a more independent foreign policy" and suggested that a return of the Liberal Party might "soften the Canadian resistance to the storage of nuclear weapons on Canadian soil". In 1967, Prime Minister Lester Pearson announced he would investigate the allegations of the CIA helping him oust Diefenbaker. In 1982,