What is stopping Putin from ending his war? Who or what is going...

What is stopping Putin from ending his war?

Who or what is going to prevent him ending his war?

I’m sure a 40km demilitarised zone inside Russia along Ukraine’s internationally recognise borders would be fine with the Ukrainian people, and by their representation, Zelensky as well.

You seem to ignore the will of the Ukrainian people that they don’t want to live under a fascist Putin dictatorship, as much as you living in the safe democratic West demand they do.

Then Ukraine will have all the autonomy they had before Putins invasion in 2014.

Simples.