> Wars end through peace agreements. Deliberately preventing them is what war mongers do.
What agreement could Ukraine possibly make with Russia? Previously Russia demanded Ukraine, a sovereign nation, be constrained by what treaties they could make or how they govern themselves. They've also been meddling in their internal affairs for decades culminating with the annexation of Crimea when Ukrainians decided to vote out the Russian supported/friendly president.
Russia can make peace any time they want by withdrawing from Ukraine. Ukraine didn't invade Russia or make war on them. The war monger in this whole affair is a short guy that lives in Moscow.