Summary

Domestic courts play an important role in the adjudication of international law, including international human rights law. The relationship between international and domestic law has often been characterized as a continuum between monism and dualism. In a monist system, international law is automatically a part of domestic law, and a conflict between the two is resolved in favor of international law. In a dualist system, domestic law is superior to international law within the domestic legal system, while international law is superior to domestic law within the international legal system. A conflict between domestic law and international law is thus not always resolved in the same way in both systems. In addition, one of the areas with the most active use of international law in a domestic legal system is under a theory of universal jurisdiction. Universal jurisdiction most often involves both the incorporation of international law into a domestic legal system and the assertion outward (extraterritorially) of domestic judicial system. Universal jurisdiction arose initially in the context of criminal prosecutions, but is also found to some extent in civil litigation, particularly in the United States. Under the principle of universal jurisdiction, a state may assert jurisdiction over an offender regardless of the nationality of the offender or victim, the place of commission of the wrongful act, or any other link to the state asserting jurisdiction.