Few questions are of greater importance for our species than those relating to the nature of the Soviet Union, China, Cuba, and other societies emerging from the historic revolutions of the twentieth century. Are these models for a brighter, happier, and more humane future? Or are they threats to all that is good and decent about humanity? The answers to such questions necessarily affect our views on all political questions, from Star Wars and the arms race to U.S. intervention in Central America
