Yes Its tragic ... not to mention cities,mines with coal and other resources,villages,railways,train stations and other buildings and places destroyed by the Nazis . But I don't know if we have to blame the russians for their help on the Nazis conquering some countries in Europe such as Poland,Norway,etc. What if we blame the Nazis for invading Russia with operation Barbarossa ... Hitler thought too much that he could take Russia in just "days" ... heh, he thought he could take the world in just minutes with his Blitzkrieg but he was so close to achieve his goal (he rather have conquered England in change) .