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
Historiography of the Cold War open to American influence and trade, underpinned many of the conflicts that triggered the beginning of the Cold War. Starting with Gar Alperovitz in his influential "Atomic Diplomacy: Hiroshima and Potsdam" (1965), revisionists have focused on the United States decision to use atomic weapons against Hiroshima and Nagasaki during the last days of World War II. In their belief, the nuclear bombing of Nagasaki and Hiroshima in effect started the Cold War. According to Alperovitz, the bombs were used not against an already-defeated Japan to win the war, but to intimidate the Soviets by signaling that the United States would