That's quite a long list of conflicts you've got there ( and still counting). I do agree with you that our situation has not changed pretty much, we are still a people at war, we have been and I think, we'll continue to be.
In my own country, predominantly, we have tribal wars and religious wars everywhere with many lives already lost, and still counting. Then on a global scale, since time immemorial, it's been the same story. So I would conclude that Man is solely responsible for the destruction and devastation that is happening across the lands, and maybe for their own selfish reasons.
Religious conflict is probably one of the most prevalent firms, that and simple greed...or religious greed also I guess. It's a terrible situation really, to fabricate a reason to go to war out of the teachings of a religion. The Crusades and terrorism come to mind. That's just humanity manipulating things to suit their needs. Another reason I think most humans are garbage.