The fallout from the first exploded nuclear bomb went farwiderthan Hiroshima - forthe next 50 years, every nation lived in fear. Robert Fox chronicles the history of Britain's attempts to live with nuclearthreat from the Pacific nucleartests and peace marches of the fifties, and the meagre plans for civil defence and survival of a nuclear attack, to the arrival of Cruise at Greenham Common in the eighties. Producer Hannah Andrassy