Yeah the big thing to me is the problem of the invader. Honestly on the grand scheme of things I dont' care who does what... but what really needs to happen is, people need to stop going on the offense. US, Isreal and Russia are currently all the ones leading attacks in other people's territory.
I'm happy for China in their "my way works, watch me sit back and show you how successful I can be in normal peacetime. When a nation has to raid other nations for their resources or land, that's IMO demonstrating what you have is unsustainable.
Ukrain take or leave it's intentions how good or bad it is. what's clear is showing the idea that russia can just take it, is in itself a bigger problem. Just like Iran, I have zero sympathy for the government of Iran, I consider them barbaric and horrible. That being said directly attacking them, is a horrible action.