"Russian acknowledgement of their allies' contribution to the defeat of Nazi Germany is long overdue."
It has started. The French contribution was recognised quite early - with squadron exchanges with 'Normandie-Nieman', etc.
The UK contribution (especially wrt the Arctic Convoys) has also been recognised by the Russians. Before he died, my Dad was belatedly awarded two commemorative gongs by the Russkies, celebrating his contribution in the Great Patriotic War!
Thus far, though, Russian recognition has been biased towards that part of the allied contribution to Russia's part of the war - and not recognising the import (for example) of D-Day or the Battle of Britain.