It's inevitable that if Ukraine has no funding or soldiers to continue this war, then it will end. I don't think that is being questioned.
I also don't think it's wise or rational to presume that every aggressive action necessarily means that the aggressor is Hitler or bent on world domination. Or even that opposing them by sending resources to their enemy is the most effective way to stop it.
[1] as a percentage of the US$850,000,000,000 _annual_ Pentagon budget
Chamberlain tried to bargain peace for Britain at the sacrifice of the Czechs and other nations and in the end his country got bombed to shit anyway. You guys make it seem like Russia has no agency here