In 1957, Adam Rapacki proposed to the United Nations that Central Europe be turned into a denuclearized zone. If implemented, the plan could have been a step toward conventional disengagement and disarmament. Instead it was rejected. This book discusses nuclear-weapon-free zones in central Europe. It takes a look back to 1957, to reconsider the rejected Rapacki proposal in its old context, in order to give an historical perspective to the renewed controversy.