Lots of interesting facts in here. Kennedy or Khrushchev were never going to start a nuclear war but there was plenty of opportunity for pilots and sailors to do so. The weapons had no central locking so once they were on a plane or submarine it was all on the individuals.
Kennedy comes out of this looking good, he had some hawks around him that were more than happy to see the world burn, even Robert McNamara wasn't the murderous bastard he turned into over Vietnam.
Hastings is always a good read.