The settlement of interstate disputes through recourse to courts and tribunals has grown gradually over the years, not only through the creation of new mechanisms to that effect, but also by using existing courts and tribunals. How these different international dispute settlement mechanisms operate in theory and practice is the subject of this comparative analysis by academic and practicing lawyers. The book takes stock of the procedure applicable in various interstate dispute settlement bodies, including international and regional courts and tribunals, and arbitration. This comparative view is essential to a better understanding of the strengths and weaknesses of the various procedural rules and regulations and the practical operation of international litigation. This book is aimed not only at scholars, but also at the courts and tribunals themselves, assisting them in revising their procedures, and at States and organisations developing future international legal mechanisms.