This is the bit which Topcat and others mistake as the US "leading the conflict" despite the invasion being ordered by Putin, continued by Russia for two years with zero suggestion of a compromise position being available, presaged by multiple other mass-murdering invasions etc. The US didn't make the conflict happen, nor did it make the Ukrainians continue resisting, it gave them the means to do so because it figured that'd tie up and heavily cost a rival (two, actually, the EU being the other).
And now it's bogged down with the costs set to escalate beyond what the US deems worthwhile its diplomatic corps is feeling out the possibilities for swinging into line with Topcat's position of ignoring what the Ukrainians want, the implications there for a Russian victory, etc etc. Except once again, even now, Putin (the man who has apparently little to no responsibility for any of this "proxy US conflict") doesn't appear to be playing ball.