The Warsaw Pact united the countries of the socialist bloc in post-WWII military alliance.
World War II was won by the United States and the Soviet Union, but both countries were opposed to ending conflict with Nazi Germany. The United States was a champion of the capitalist ideology, which spreads ideologically throughout the world. It was already Soviet Union since the Russian Revolution in 1917 of socialism. How two ideologies clashed with the end of the war, polarizing the world between capitalists and communists. The clash between the two World War II-winning powers occurs only at the ideological level, because it has the necessary weapons and conditions to destroy one another. Fear and the prevention of a new conflict of extreme proportions creates a climate of tension in the world that prevents direct confrontation, begun as well as the Cold War.
