While the lives of millions of people are overshadowed by poverty and destitution, a relatively small subset of the world's population enjoys an unprecedented level of wealth. No doubt the world's rich have duties to address the plight of the global poor. But should we think of these as duties of egalitarian justice much like those applying domestically, or as weaker duties of humanitarian assistance?
In this book, Laura Valentini offers an in-depth critique of the two most prominent answers to this question, cosmopolitanism and statism, and develops a novel normative framework for addressing it. Central to this framework is the idea that, unlike duties of assistance--which bind us to help the needy--duties of justice place constraints on the ways we may legitimately coerce one another. Since coercion exists domestically as well as internationally, duties of justice apply to both realms. The forms of coercion characterizing these two realms, however, differ, and so the content of duties of justice varies across them. Valentini concludes that given the nature of existing international coercion, global justice requires more than statist assistance, yet less than full cosmopolitan equality.

Observe social distancing. Tip your waiter. Give priority to the elderly. Stop at the red light. Pay your taxes. Do not chew with your mouth open. These are imperatives we face every day, imposed upon us by norms that happen to be generally accepted in our environment. Call these 'socially constructed norms'. A constant presence in our lives, these norms elicit mixed feelings. On the one hand, we treat them as valid standards of behaviour and respond to their violation with emotions such disapproval, resentment, and guilt. On the other hand, we look at them with suspicion: after all, they are arbitrary human constructs that may contribute to oppression and injustice. In light of this ambivalence, it is important to have a criterion telling us when, if ever, we are morally bound by socially constructed norms and when we should instead disregard them. Morality and Socially Constructed Norms systematically develops such a criterion. It traces the moral significance of those norms to the agential commitments that underpin them, and explains why those commitments ought to be respected, provided the content of the corresponding norms is consistent with independent moral constraints. The book then explores the implications of this view for three core questions in moral, legal, and political philosophy: the grounding of moral rights, the obligation to obey the law, and the wrong of sovereignty violations. Morality and Socially Constructed Norms shows how much progress can be made in normative theorizing when we give socially constructed norms their (moral) due.