[John Rawls] nowhere suggests that wealthy nations ought to try to assist poor nations to meet the basic needs of their citizens, except in so far as this is part of a much broader project of helping those peoples to attain liberal or decent institutions. The probability that, in the real world in which we live, tens of millions will starve or die from easily preventable illnesses before such institutions are attained, is not something to which Rawls directs his attention.

Peter Singer, ‘Outsiders: Our Obligations to those beyond Our Borders’, in Deen K. Chatterjee (ed.), The Ethics of Assistance: Morality and the Distant Needy, Cambridge, 2004, p. 26