If the US stops support would the war end? I don't really think so, but maybe. If it did, though, I would guess lives would be saved. That doesn't seem like a delusion.
How? If all support for Ukraine crumbles and russia just plows ahead, do you think the ukranian population would be safer?
The only "less lives" approach would be if russia retreats in an agreement to keep the previous separatist regions they annexed while accepting some sort of buffer inside Ukraine from them on, which Zelensky would agree in the form of bases or nato membership. Which Russia will never go for.
