When will the war in Ukraine end?

I feel like there hasn't been a war as foolish as the war in Ukraine in human history.
I believe Ukrainian politicians brought this war upon themselves, even though it could have been prevented in many ways.
Since gaining independence from the Soviet Union,
over the past 30 years,
they have been constantly fighting between pro-Western and pro-Russian factions, which has led to this situation.
The diplomatic failure of the US and Western Europe also played a part; instead of integrating Russia into the West after the collapse of the Soviet Union, they treated Russia as they did the former Soviet Union—treating it as an adversary and being excessively cautious, while expanding NATO right up to Russia's doorstep.
Today's Europe is not the Europe of Napoleon and Hitler, and Russia is no longer Stalin's Soviet Union.
There is no reason for them to fight or be hostile toward one another.
The war in Ukraine must end as soon as possible so that relations between Western Europe and Russia can normalize, and so that Europeans can once again use Russian natural gas.
That would be better for world peace and better for the lives of Europeans.