A system of government in which citizens share labor and property, Communism has been practiced in a number of different ways through the ages. The ancient Greek and medieval Utopian visions included an ideal society, while twentieth century Communism took a more sinister turn with the regimes of Lenin, Stalin, and Mao Tse-tung. The international scope of the Cold War pitted superpowers against one another in a struggle that could have ended the world...