nobody honestly believes stalin was content with what he had. putin is a million times more cucky yet still everybody, especially poles think he wants to invade. your "sources" don't mean shit other than saying that soviets arguably wanted a longer partnership before they attacked.  do you even care to explain the many vehicles left in a staging ground? in the first days germans couldn't believe the amount of material they destroyed with modest means because it was all conveniently left so close to the border.
Germany