Antonio Cassese (ed.), The Oxford Companion to International Criminal Justice, OUP, 2009, pp. 1008. Short book review by Jernej Letnar Černič. International criminal law falls within the areas of international law which have progressively developed in the past two decades. This field of law has come a long way since its first steps in Nuremberg and Tokyo after the Second World War and the more recent establishment and functioning of ad hoc tribunals in the Hague and Arusha and the permanent International Criminal Court. In this way, international criminal law has taken confident and decisive steps towards becoming a full-fledged…