Its a tribal world and has been throughout history...
Im sure early humans fought against each other,,,We spread into the world and Neanderthal lost out somehow....Countless tribal wars since then..
Our Indians fought against each other, then Europeans came and fought and took from them...
It persists today, the bigger tribe wants what the smaller tribe has, be it land or resources...Israel for instance or Iraq....
The Ukrainians are just next on the list...Might doesn't make right but it normally wins out...
Don't see it changing anytime soon, do you?