This volume presents an overview of the principal features of the legacy of International Tribunals and an assessment of their impact on the International Criminal Court and on the review process of the Rome Statute. It illustrates the foundation of a system of international criminal law and justice through the case-law and practices of the UN ad hoc tribunals and other internationally assisted tribunals and courts. These examples provide advice for possible future developments in international criminal procedure and law, with particular reference to their impact on the ICC and on national jurisdictions. The review process of the Rome Statute is approached as a step of a review process to provide a perspective of the developments in the field since the Statute’s adoption in 1998.