Responses to "the challenge to build a world beyond war" by Soviet and American scholars plus a few others. A notable fact about the book is that it is being published simultaneously in the United States and the Soviet Union. The Soviet contributors-with a rather heavy representation from the Institute of the U.S.A. and Canada, hardly a hotbed of new thinking-stress the significance of changes instituted by the Gorbachev regime in the direction of openness, diversity, democracy, human values and international interdependence. The Americans, exemplifying their expected diversity, offer a variety of individual views, definitely not establishment thinking, on how to save the world from destruction. This is not, however, just another exercise in "struggle for peace" propaganda or a declaration of principle on the inadmissibility of nuclear war. The authors at least try to address practical ways, both social and technological, to reduce the existing threats to survival.