I am not arguing for Putin, I am arguing for the people in this war.
But yes I see your point. Maybe NATO could threaten with nuclear war if Russia ever attacks anything again, but that won’t change the problem.
I think the only way to stop Putin is with a revolution inside of Russia.
Russia promised that they would be a democratic country but since Putin’s “democratic” elections that promise was broken.
In my country we have a law inside the core of our basic lawbook that enables every institution and every human being living in the country to stop a dictatorship to arise by force because it is treated as self defense.