Is it the duty of citizens around the world to take action to combat the serious abuses of human rights that some people suffer at the hands of their own governments? Who has this duty? In this article the author analyzes these questions and provides some tentative answers to them, using a two-step procedure. First, he analyzes the relevant moral concepts and relationships on the level of individual person-to-person interaction, and second, making use of the conclusions recovered from this study of personal morality, he constructs guidelines for dealing with similar problems which arise in international relationships.