'Legal philosophers have too often ignored international law as irrelevant, or because it is an embarrassment to their theories. In his innovate new book, The Nature of International Law, Miodrag Jovanović properly brings international law back to the center of jurisprudential inquiry. As important, Jovanović offers an important challenge to, and alternative to, conceptual analysis, in his prototype theory.' Brian H. Bix, Frederick W. Thomas Professor of Law and Philosophy, University of Minnesota