It was the soviets themselves that stopped the germans with help from the winter and to much stretched out supplylines , the battle of Stalingrad (turningpoint in the war)was one of the most fierce battles in history , in Russia the major german groundforces died , 9 out of 10 germanwarcasualties say : died in the east
Operation Barbarossa was meant to be a blitzkrieg, which would last a couple of months , thats why most germans had no proper winterclothes , hitler thought it would be over before winter
And yes stalin gave the order " no step back " in Stalingrad , but since the germans made not much prisoners they had no choice .
As far as the EU is concerned nigel farage of the UKIP in England can explain how they go to work.
here is the video :
http://www.youtube.com/watch?v=zTN7hL5fgWo
Actually the Russians had other help despite what they claim.