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 the Democratic Republic of the Congo the scope of the Cold War. With Lumumba painted as a pro-Soviet radical, Mobutu would lead the September 14th coup against him and President Joseph Kasavubu, hoping to neutralize them and impose a ban on politics for the rest of the year. The coup was sponsored by the CIA, and would receive continued support by the CIA, including an October 27 decision by the 5412 group to release an additional $250,000 to support Mobutu. The coup resulted in Lumumba being placed under de facto house arrest, protected by U.N. forces. When Lumumbu grew tired of the situation, he escaped U.N.