The Cuban missile crises I would say was a lot less precarious than Able Archer or the 1983 Soviet nuclear false alarm alert - which was averted, by, ahem - an engineer!
There is an incredibly good minute-by-minute account of the Cuban crisis: "One Minute to Midnight: Kennedy, Khrushchev and Castro on the Brink of Nuclear War" - it covers a lot of areas that aren't often mentioned such as the U2 flight at the North Pole going astray or the Soviet nuclear cruise missile teams targetting Guantanamo that taken together with the more well known events make it seem remarkable to me that we survived.
There is an incredibly good minute-by-minute account of the Cuban crisis: "One Minute to Midnight: Kennedy, Khrushchev and Castro on the Brink of Nuclear War" - it covers a lot of areas that aren't often mentioned such as the U2 flight at the North Pole going astray or the Soviet nuclear cruise missile teams targetting Guantanamo that taken together with the more well known events make it seem remarkable to me that we survived.