 Some legal philosophers have responded to the problem of limited enforcement by fashioning a theory of international law on the basis of the hypothesis—admitted to be a “fantasy”—that an international court with compulsory jurisdiction exists and that there are reliable international institutional mechanisms for giving effect to its decisions (Dworkin 2013;  section 4.4 below).  Some have also given a normative interpretation of the relation between law and enforceability that makes in principle, rather than actual, enforceability a touchstone of legality. Thus, according to Liam Murphy, when it comes to law