Comment by foldr

>The war is at a complete standstill and it will last for another horrible decade if no concessions are made.

There is a slight hope that the current Russian regime will collapse before then and be replaced by one that doesn't want to continue the war. (Though, that said, it could equally well be replaced by a regime that's even more ultranationalist than the current one.)

While Europe certainly does lack the political will to make a substantial intervention, it's not just a question of political will. There is the small matter of not starting the third world war to consider.