Without question, international criminal law (ICL) has become a legal growth industry. Regional supranational systems, such as the European Union, are beginning to prepare a genuine supranational criminal law that may supersede the national jurisdictions. These efforts are still in their infancy, but along with the creation of the prosecutorial framework and measures like e.g. the European Arrest Warrant, EUROPOL or EUROJUST, the defence lawyers are preparing themselves for the new challenge. It is thus useful and necessary to cover these developments from the get go.