STEPHEN TWIGGE is an Honorary Research Fellow in the Department of Science and Technology Studies, University College, London. He was formerly a Research Associate in the Department of International Politics, University of Wales, Aberystwyth. He has written widely in the field of nuclear history and international relations and is the author (with Len Scott) of "Planning Armageddon: Britain, the United States and the Command of Western Nuclear Forces, 1945-1964".