Spielberg tapped childhood fears for 'Spies'

That October, the U.S. and the Russians were on the brink of nuclear war: the Cuban Missile Crisis, the tense 13-day confrontation between Kennedy and Khrushchev, all those school warnings about radioactive fallout suddenly looking alarmingly real.

http://www.columbian.com/news/2015/oct/18/spielberg-tapped-childhood-fears-for-spies/