Wissenschafts als Herausforderung: Manifeste
Göttingen Declaration, April 12, 1957 (2)
2. There is no limit known to the possibility of increasing the destructive effect on life and property of Strategic atomic weapons. Today a tactical atomic bomb can destroy a small city; a hydrogen bomb can make uninhabitable a region the size of the industrial district of the Ruhr. The whole population of the German Federal Republic could be exterminated today by means of the spreading radioactivity of hydrogen bombs. We do not know any practical possibility to protect large populations from this danger.