Kok-Chor Tan

Cosmopolitanism, as a moral idea, holds that individuals are the ultimate units of moral worth and are entitled to equal consideration, regardless of contingencies such as citizenship or nationality. In one common interpretation, cosmopolitan justice not only regards individuals as the basic subjects of moral concern, but it also requires distributive principles to transcend national affiliations and to apply equally to all persons of the world. As Simon Caney puts it, “persons’ entitlements should not be determined by factors such as their nationality or citizenship.“

Debates on humanitarian intervention have focused on the permissibility question. In this paper, I ask whether intervention can be a moral duty, and if it is a moral duty, how this duty is to be distributed and assigned. With respect to the first question, I contemplate whether an intervention that has met the "permissibility" condition is also for this reason necessary and obligatory. If so, the gap between permission and obligation closes in the case of humanitarian intervention. On the second question, I propose 'institutionalizing" the duty to intervene. In this way, an otherwise imperfect obligation to intervene can be made "perfect" and specific to some agent.

Kant divides moral duties into duties of virtue and duties of justice. Duties of virtue are imperfect duties, the fulfillment of which is left to agent discretion and so cannot be externally demanded of one. Duties of justice, while perfect, seem to be restricted to negative duties (of nondeception and noncoercion). It may seem then that Kant's moral philosophy cannot meet the demands of global justice. I argue, however, that Kantian justice when applied to the social and historical realities of the world can generate positive duties to promote and provide for the well being of others.

Luck egalitarianism provides one powerful way of defending global egalitarianism. The basic luck egalitarian idea that persons ought not to be disadvantaged compared to others on account of his or her bad luck seems to extend naturally to the global arena, where random factors such as persons’ place of birth and the natural distribution of the world’s resources do affect differentially their life chances. Yet luck egalitarianism as an ideal, as well as its global application, has come under severe criticisms in recent debate. My aim in this article is to restore plausibility to the luck egalitarian idea, and to suggest how it could then provide a plausible grounding for global egalitarianism. To do this, I will propose a more modest but also more defensible conception of luck egalitarianism that can also strengthen the case for global distributive justice