albania anschluss apocalypse apocalyptic and post-apocalyptic fiction armageddon arms race balkan wars berlin blockade british armed forces chiefs of staff committee cold war computer cuba cuban missile crisis curtis lemay czechoslovakia defcon doomsday doomsday clock doomsday argument doomsday cult doomsday device doomsday event doomsday film douglas macarthur earth egypt end time ernst haeckel eschatology ethiopia fiction fidel castro first coalition french fourth republic germans hotline human extinction intercontinental ballistic missile israel joseph stalin korean war list of nuclear holocaust fiction manchuria nato nobel peace prize north american aerospace defense command norwegian rocket incident nuclear holocaust nuclear warfare operation ortsac operation unthinkable planetary phase of civilization popular culture proxy war seven days to the river rhine societal collapse soviet union spanish civil war stanislav petrov strategic air command suez crisis ten threats truman doctrine united states senate vasiliy arkhipov warsaw pact west berlin wikinews winston churchill world war i world war ii world war iii in popular culture world war yale university press yom kippur war yuri andropov