This volume aims not to retrace the fairly familiar terrain of establishing the legal character of human rights, or to argue the proposition, now well accepted, that human rights are part and parcel of the discipline of international law, but to consider the influence of human rights and humanitarian law on general international law. Although human rights and humanitarian norms are central to the book, then, it is not a book about human rights and humanitarian law. Rather, it deals with the radiation, or the reforming effect, that human rights and humanitarian law has had, and is having, on other fields of public international law. Because of the peculiarities of human rights law, this influence cannot be taken for granted. It is sometimes said that the elaboration of human rights norms and institutions has produced no less than a revolution in the system of international law. Is this true and if so in what parts of international law? By examining most of the general areas of public international law, the author attempts to demonstrate that the influence of human rights and humanitarian norms has not remained confined to one sector of international law, and that its influence has spread to many other parts, though to varying degrees.