No one was expecting the bombs to fall. The Soviet Union was hit. The USA was hit. And just about every other country was hit. Humans had just about killed off their whole species. People had started villages, there was a large scale Slave trade, Government Remnants and even some deep bunkers had been found.

You are a Scavenger, a former Red Army sniper. WWII ended when the Nazi forces launched ICBM's at every major country. The Soviet Union and the USA fired back, destroying Nazi Germany completely.