Kept secret for 42 years, a 1975 report shows the Soviets viewed the open ocean as a convenient place to launch nuclear strikes without the messy collateral damage of land targets.
Soviet planners weighed the annihilation of US cities and the Ruhr valley in a TOP SECRET journal kept from the West for decades, though some sources remain blacked out.
Western targets were marked for immediate and crushing nuclear strikes in a 1962 Soviet blueprint that identified propaganda and carrier movements as markers of an impending war.
American reserves risked total isolation under a secret Soviet plan to create radioactive zones and seize harbors, a strategy the CIA tracked using the codeword IRONBARK.