It's the US who has the most say in whether this will end. This conflict pulls the EU from cheap resources from Russia, now EU rely more on US, whether it's resources or military. Especially military since they now have a big bear to fear from, US military industrial oligarchs are making banks from this. You keep provoking the bear, probing the red lines step by step, then there's no wonder there are consequences. Buffer zone/state existed in history for a reason and it still stands to this day.

Analysis from benefits point, asking question like who profit or benefit the most ?. This will help you step out of the propaganda and misinformation from both sides and think for yourself.