This article proposes 3 principles and 3 imperatives as the philosophical foundations of a global journalism ethics. The central claim is that the globalization of news media requires a radical rethinking of the principles and standards of journalism ethics, through the adoption of a cosmopolitan attitude. The article explains how and why ethicists should construct a global journalism ethics, using a contractualist approach. It then formulates 3 "claims" or principles: the claims of credibility, justifiable consequence, and humanity. The claim of (...) humanity is developed further by the formulation of 3 imperatives: to act as a global agent, to serve world citizens, and to enhance nonparochial understandings. The article concludes by considering some implications of a cosmopolitan attitude for the practice of journalism. (shrink)