If Ukraine president is ready to end the war with Russia without minding what NATO cares about, then we shall be seeing some kind of reduction in the level of victims and properties destroyed as a result of the war. If the dialogue would work and Ukraine is ready to put a deft ear to what NATO think about the war then everything will be resolved amicably.
The war will only end if Russia withdraws its army from the territory of Ukraine.
Which it wouldn't and Zelenksky has been saying he'll fight till the last Ukranian than negotiating with Russia while Ukranians are unwilling to fight further for the interest of western powers.
The irony is Russia didn't wanted (further) Ukranian territory in Minsk agreement but zelensky was determined that a Russian life taken is worth more than Ukranian. And now they are in a stage that they can't negotiate without losing their territory.
Zelensky still believes he'll get paid in full by his western overlord but Ukranian parliament is not in the same line as zelensky.
Zelensky is highly likely to be ousted by the parliament and it could be the only way ahead for Ukraines future.
I am not sure how willing Ukraine and it's benefactors would be when comes to negotiate with Russia. The whole point of the conflict was for the Klemlin to annex land, stealing it from Ukraine, regardless the ethical population of the west of Ukraine. Russia does not have the authority to attack and steal territory from a sovereign country which happens to be it's neighbor.
Though, because of resources are not infinite, I would not be surprised if Washington decided in the future to negotiate with Russia and convince Ukraine to do so, giving up some of the occupied territory, though, I assume that will pretty much depend on how politics develop in the United States in the coming years, in Donald Trump managed to win the presidency of the United States, I would expect much of the funding for Ukraine to be withdrawn and Russia to take advantage of it, leading a charge to take over Kiev, unless the European Union decided to replace those resources USA won't longer give, with their own.
Whatever happens, I still believe Russia never had an actual reason to start this aggression against Ukraine, specially against civilians who have nothing to do with politics and the military.