This is 60 years ago... In that same timeframe the EU was formed and grown to 26 nations including roughly 10 that pointed nuclear missiles at each other one time.
Just like Cuba didn't really itself point missiles towards the US (it was the soviets), the Warsaw pact nations inside current EU were used as Soviet proxies too.
Ok, I still don't get it then. The Warsaw pact nations were not planning on using their nukes on other European nations with nuclear weapons, to avoid getting nuked themselves. This is documented in the (formerly) secret war plans that were released by the Czech republic.