Gurgen I think Europe needs to take some of the blame here as well. I don't agree with the American stance but Europe has been for too long ignored their own armed defences and relied upon American security for a long time. They've pissed away their money and now they'll be dictated to by the Americans how this war ends and the terms of it. They know exactly what Russia are like yet still chose that path, hell they happily bought oil off them.
Lets see what Trump does but early signs are he wants the war to stop and doesn't really care too much about anything else. Europe does have a lot of frozen Russian assets which it could try to use as leverage. But right now a lot of European countries needs to have a long hard think about how they prepare going forward. The Americans are not providing security any more, if they do it will come at a high cost.