a satisfactory theoretical framework to
approach this question is increasingly problematic. The article proposes a careful comparison of cases from the United States, Canada and the United Kingdom, and uncovers three competing
approaches: country, compact and conscience. How, then, do courts choose among these
approaches and put them in practice? One might have thought that a natural starting point would be the international
law of prescriptive jurisdiction. The first lesson from the cases, however, is that international
law does not get us very far. R. v. Hape, the one decision...