INTRODUCTION The question of the universal application of law always poses a quandary,for international law lacks a centralized government system.The issue is of greatest importance for international criminal law,which has a relatively short history.The legitimacy of international criminal justice will be enhanced in part by proving its application in a fair manner while the contents of the procedural aspects of such law must themselves be fair.Today,the universal application of international criminal law seems to be ensured at multi-fora,especially by means of the healthy division of labor between national and international criminal jurisdictions.First of all,the completion strategy of various ad hoc tribunals exposes this tendency.For example,some national courts have been engaged in trying suspected Rwandan génocidaires under universal jurisdiction.Apart from the overlapping jurisdiction of national courts and ad hoc tribunals,the complementarity principle,especially the policy of positive complementarity adopted by the Statute of the International Criminal Court (hereinafter,the "ICC"),also has promoted the setting-up of universal jurisdiction by some domestic legislations.