An economist whose reputation for cleancut analysis has been established in previous books here explores the scale of the challenge the West is facing, and the costs of the necessary policy of containment. She weighs the relative strengths of opposing forces, seeing the economic balance with the West but the extent of mobility inadequate for sustained effort to the end of defense and social and economic stability. She then advances the arguments for some measure of unity of operation. She meets head-on the arguments against controls, government supervision, risk of inflation and overexpansion, and with cogent reasoning supplies many of the answers. She then presents the alternatives-negative measures, rather than the unpalatable positive measures. She suggests methods of off- setting the dangers, of stimulating growth of wealth, of expansion of national resources. She weighs the arguments of Britain against partial federation in a European council, and America's reluctance to accept world federalism as a solution, and discusses the steps by which unity could be attained within the framework of a strengthened United Nations. A stimulating and constructive book for thoughtful citizens.