But Stalin never did that, he didn't break the pact, which goes to show what attitude he had towards ♥♥♥♥ promises of non-aggression. In 1940, when most of divisions were at the French border, the Soviet Army could have used the opportunity to steamroll into Germany and likely capture Berlin in a few weeks.
Besides, the Russians hate English like the plague, but they see Germans eye to eye in many respects. It was absolutely in his geopolitical interest to befriend Germany, even at the cost of letting it dominate most of Europe. Stalin was certainly open to it, as knocking Britain and France out of the picture would have given leeway for SU to expand south into resource rich Persia, Middle East, and India. If Hitler wasn't such an ideological fanatic, an alliance with Moscow in the war with the West was not out of the question. Following the Molotov-Ribbentrop pact, Stalin was ostensibly interested in maintaining a neutral/friendly relationship with Germany. The scariest thing is, it was possible historically.
