The world is threatened as never before by an insane buildup of nuclear weapons some five hundred times as strong in their explosive capacity as the latest estimate of all the chemical explosives that have ever been used throughout history. Leaders in major countries probably know the awful consequences of a nuclear war too well to start one, but the world has still to reckon with possible acts of aggression by other nations or flaring-up through technological failure, mechanical or other accident, malfunctioning or faulty feeding of computers, misinformation, neglect of machines or of constructional faults, terrorist or lunatic action, organized banditry, or the outcome of mere ‘acts of God'
