Well it’s a big topic probably better discussed by philosophers and I feel too mentally weighed down to get very far, but here’s a start: Any set of rules is just a shared fantasy. I guess it starts with some basic set of assumptions and principles but they are somewhat arbitrary. They depend on history and culture and personal preference. The rules a hundred years ago were different and they will be different a hundred years hence. Ultimately they can’t be defended logically. Like you call that Russian politician psychotic and we can agree his “new rules” are bananas, but like that’s just our opinion against his, man.
Under the “usual rules”, we value peace and justice and exhibit goodwill towards our fellows as far as possible. Transgressors, though, will be dealt with by shaming at a minimum. Maybe banishment. Or prison. Even execution in extreme cases. Whether or not we acknowledge it, dehumanization is part of that. They are no longer part of the group. They are out. Fuck them. Maybe you or I as individuals don’t agree with that? Sorry, too bad for us. Those are the rules.
There are “usual rules” for war too. Those rules are different from peacetime rules, but there are still rules. First rule is you need a good reason to go to war. Second is you have to declare war. Somewhere in there are rules about no raping, no pillaging, and no murdering civilians or POWs.
Of course, those rules get broken all the time. Usually (hopefully), not systematically and on the orders of political leaders, but it’s not like any of this has the force of physical law. So Putin can break these rules if he wants to, which he does, and he has, all of them. In doing that, he crossed a threshold as far as most people are concerned. It’s banishment time. Dehumanization goes with that. It might be ugly and nasty and uncivilized and oh man what have we come to, but that’s the recourse when the rules are broken.
So I’m going to call Putin names and hope for a humiliating defeat and that he loses power. And I’ll support Ukraine because they’re doing the suffering and the dying fighting him. Russians I know don’t support Putin and left the country long ago to escape persecution so I personally won’t go as far as demonizing Russia or Russians or Russian soldiers, but I understand the desire to lash out.
There will be consequences of the fight, of course. It’s possible the war spreads, economies are damaged, people go hungry and starve, there’s general unrest, maybe there’s a direct confrontation between NATO and Russia. People say this war isn’t worth the risks and rationally maybe that’s true. And man, should we really be making these choices for the whole planet? Brazil and China and India sure don’t want to go along with us. But we’re not entirely ruled by reason. Reason isn’t the source of morality. It might not be smart, but sometimes you stand up to the bully even if he’s bigger than you are.