So here's the problem with peace talks. What would Russia agree to? They currently occupy a massive chunk of pre-2014 Ukraine, something like a quarter of the country. If Ukraine agrees to that, it sends a signal to the Russian government that invading Ukraine pays. Russia already made a go at installing a puppet government in the initial 2022 invasion. Why should Ukraine trust it not to take the time following a peace agreement to regroup and invade again? And besides that, Ukraine's never going to easily give up that much territory. Imagine that happening to your own country.