Moscow's Red dictator signed a mutual security pact with the Berlin Nazis, in Moscow, and in 1939. Do you recall that? Then the West had to bail out the pro-Axis Russians after one tyrant stabbed the other in the back in June of 1941.
Is the Molotov-Ribbentrop Pact in your Russkie history books? I doubt it, since it's truth, something Russian have never been accustomed to their dictator telling them, remains in short supply in the neo-Soviet Empire of the Putin régime.
Russians and Germans met half way into carved up Poland in 1939.