Is it morally acceptable for one nation to be the world's policeman? Are there circumstances under which one nation has either the right or the obligation to dominate the others? This important and timely book is the first to examine these and other moral issues raised by America's status as the sole world superpower after the end of the Cold War. Lea Brilmayer argues that American hegemony is a form of international governance and must be evaluated by liberals in the same way they would evaluate the legitimacy of domestic political arrangements. According to Brilmayer, liberal political morality as expounded by such philosophers as Rawls and Nozick requires that those who are governed give their consent, and so this becomes the key to hegemonic legitimacy. Brilmayer discusses three ways that consent can be obtained and then shows how a further justification for hegemonic governance can be provided derived from basic universal norms of human rights. Each of these four rationales, says Brilmayer, provides a standard for assessing the legitimacy of American actions. Each also specifies that there are certain circumstances in which hegemonic intervention is not only permitted but actually required. Liberal political morality thus provides a limited justification for American hegemony, although—since liberal political morality is often criticized as misguided or irrelevant—even this limited justification is dubious. Brilmayer's book is a brilliant demonstration of the importance of normative evaluation and of the moral problems underlying the enforcement of international law.