Philosophical notions of humanitarianism – duties based in beneficence that apply to humanity generally – are largely focused on personal duty as opposed to official development assistance, or foreign aid, between nations. To rectify this gap in the literature, I argue that, from the point of view of donor nations, their humanitarian obligations are met when they have given enough of their fair share of resources, and from the point of view of recipient nations, they have received enough when they (...) have reached a threshold of capabilities. I conclude that a future theory of humanitarian obligations ought to take into account the disparate, and often conflicting, interests of nations as benefactors or as recipients of aid. (shrink)