Resource disputes are the natural order of things–they are how nature self regulates. Without some sort of overarching control they will be inevitable.
Many big problems can only be effectively addressed if all members of the society cooperate and act against their short term individual interest. You will never solve the prisoners dilemma on a global scale without massive cooperation.
Don’t mistake me either, I’m not advocating for a worldwide emperor who rules with an iron fist, but without some sort of worldwide authority you’ll never get climate change under control or even deal with resource disputes. There needs to be disincentive for people acting in their own self interest in ways that hurt society or the planet as a whole.