There an element of truth in that Russia was only really a convenience ally, It certainly didn't like the British since their involvement in the civil war and the Germans of course fought there under their victorious masters direction. There was no liking for communism in the West and it has to be remembered that the French in pre WW1 had fostered agreements between tsarist Russia. However the Socialist mentality in France was quite happy to deal with the communists with their own adoption of communists parties in the inter and WW2 years and they still exist. That spilled over in the20- 30's in Germany and North Germany, Berlin, Hamburg etc all were hotbeds of communism which the NS wouldn't tolerate. That's why the Russians do not consider their great patriotic war to be anything but their own.Enthusiastically backstab the USSR, with the expectation that a Nazi/Soviet war, whatever the outcome, would leave even the victor too exhausted to be of concern, with the American stick to encourage movement Eastward? Germany to return to some approximation of pre-war western borders as the (Anglo) Allies "ask?"