Interactions between National and International Criminal Law in the Preliminary Phase of Trial at the ICC

The author discusses the interaction between international andnational law in determining whether a case is admissible fromthe viewpoint of complementarity (Article 17 of the Statuteof the International Criminal Court) and with regard to theconcept of ‘interests of justice’ (Article 53 ofthe same Statute). Complementarity does not separate nationalfrom international criminal jurisdiction; nor does it put themin conflict with each other — rather, it favours the aforementionedinteraction. In addition, the concepts of ‘ability’and ‘willingness’ tend to ensure an indirect harmonizationof national criminal systems around common international criteria.As for reliance on the notion of ‘interests of justice’when determining whether to initiate proceedings, accordingto the author, Article 53 envisages a compromise between prosecutorialdiscretion and strict legality, thereby enshrining a hybridizationbetween various national traditions. The author notes that thedecision to open investigations should be objective and foreseeable;to this end, she suggests some general criteria, which are intendedto serve as guidelines for establishing whether, in a specificcase, the interests of justice warrant the initiation of proceedings.