World communism ideology could not admit that, to counter the influence of capitalist countries. It also supported revolutionary socialism around the world to continue to work toward world communism, however distant it might be. Thus it backed the 26th of July Movement in the Cuban Revolution, the North Vietnamese in the Vietnam War and the MPLA in the Angolan Civil War. The domino theory of the Cold War was driven by this intent as anti-communists feared that isolationism by capitalist countries would lead to the collapse of their self-defense. The reform and opening of China and the restructuring and openness of the
Foreign interventions by the United States US troops remain in South Korea to deter further conflict, as the war has not officially ended. President Harry Truman was unable to roll back the North Korean government due to Chinese intervention, but the goal of containment was achieved. During the Cold War, the US frequently used the CIA for covert operations against governments considered unfriendly to US interests. In 1949 under US President Harry Truman, a coup overthrew an elected parliamentary government in Syria, which had delayed approving an oil pipeline requested by US international business interests in that region. The exact role of the CIA in that