- International Criminal Tribunals
- International Criminal Court
- Criminal law philosophy
- Terrorism
- Corporate criminal responsibility
- Transnational crimes
- Extradition/ European Arrest Warrant
- Human rights and criminal law
Graduated in 1982 in Criminal Law, at Free University of Amsterdam
PhD in 1993, Maastricht State University
1986-1988 Dutch Association for Refugees
1988 - 1991 Research Assistant, Maastricht State University
1991 - 1999 Assistant Professor, Maastricht State University
2000 - 2004 Associaie Professor, University of Amsterdam
2004 - 2013 Chair of International Criminal Law, University of Amsterdam
1999 - 2000 Ad litem Judge, District Court of Roermond
2012 - 2013 Ad litem Judge, Extradition Chamber, District Court of Amsterdam
- Programme Director Joint Programme International Criminal Law Columbia Law School - University of Amsterdam
- Co Chairman Dutch Section of Association International de Droit Pénal
- Member Editorial Board Journal of International Criminal Justice
- Member Editorial Board Netherlands Yearbook of International Law
- Editor 'Melai Internationaal' (loose leaf commentary on international cooperation in criminal matters)
- Regular reviewer Oxford University Press