saying its human nature to war isnt quite true. In a recent study of primates cultural structures, the aggressive nature of the beasts were studied. The apes would fight over their territory and establish dominance as expected, but after the initial fights the "alpha ape" would go up to the apes he had fought and groom them in a kind of peace offering. The primates did fight over the basic things, but it was an innate instinct to make up, perhaps a biological instinct that deals with macrobiological systems(certain cells act together because they realize, perhaps not on a concious lvl, that they are stonger together). Anyways, it was just facinating seeing that our nature is not just to steal and kill to make ourselves better, we are just as capable of being peacemakers, and with superior intelligence over primates(well, some os us),we should be able to avoid the fighting completely.