Well, they had a peace deal on the table in April. Which would have ended it. But the USA (CFR) said no. We want to use you to weaken Russia, and we don't care how many of you die; here's some cash and some weapons.Should Ukraine capitulate?
Right now, someone from their military needs to take out Zelensky, imprison the neo n**i Bandera nationalistic element as the start of erasing that idealogy and then unconditionally surrender based on the terms set by Russia. I believe Russia would be willing to let them retain Odessa, so they are not dead economically.
If not, Ukraine will cease to exist as a nation-state, and the lives lost will rise significantly. Many Russian soldiers will die, but tenfold Ukrainians will die, and they will be all but destroyed.