In our time, the nation of going unpunished particularly amongst those offenders who are suspected of international crimes has caused major difficulty in the relations between the nations. Historically, those suspects of international crimes who were in possessions of enough power and immunity have never had to surrender to justice. In the latter part of the twentieth century therefore, the consensus of the nations was to enact laws and procedures such as making international crimes resistant against limitation of action provisions, obligation the nations to extradition, legal aid and assistant and establishment of International Criminal Courts in order to prevent the international criminals to escape punishment. The Statute of International Criminal Courts is an instrument, in the Part 9 of which entitled "international cooperation and judicial assistance" contains the requirement of carrying out the commitments by the nations in various forms. According to this Statute in order to cooperate with the Court all the member states are obliged to A Revue de Recherch Juridique, No. 45, 2007 enact laws in their domestic legal systems. The Part 9 also contains provisions in respect of requests for the arrest and handing over of the offenders, other forms of cooperation and the manner of interaction between the states and the Court. Nonetheless, the member states may in following the provisions of the Statute encounter certain constraints resulting from their previous commitments to other nations prior to their joining the Statute.