Is it is justifiable to make any basic moral distinction between 'insiders and outsiders'? Do we have substantive duties of 'justice' to all human beings or merely Humanitarian duties of aid and assistance? These are two of the most crucial questions confronting world politics and the field of international ethics today.

International Ethics: A Critical Introduction provides an engaging and accessible introduction to these foundational questions. In a cogent and carefully argued analysis, Richard Shapcott critically examines the theories of cosmopolitanism, communitarianism, realism...