Geoffrey is actively involved in training and lecturing in international criminal law, including the following lectures: 

October 2015 - ICC Defence training about complex forensic evidence at the Lebanon Tribunal to a training organised by the Office of Public Counsel for Defence and Verwiel & Van der Voort (see above).

April 2015 - Lecture to students at the University of Maastricht on The position of the Defence before International Tribunals - A practitioner’s perspective

2012-2015 - Regularly lectured Lebanese students on War Crimes at the Asser Institute as part the Inter-University Programme on International Criminal Law and Procedure organised by the T.M.C. Asser Institute and the Special Tribunal for Lebanon (see below).

2014-2015 - Regular lecture on War Crimes before the Summer Law Program on International Criminal Law provided by the Asser Institute

2013-2015 - Regular lecture on Superior Responsibility for the Grotius Centre of Leiden University as part of their Summer School on International Criminal Law

November 2012 - Lecture on trials in absentia to the International Association of Conference Interpreters

July 2009 - Presentation on Victim Participation before the ECCC to visiting panel of Thai Judges, Asser Institute 



In addition to the lectures and training listed above, Geoffrey has also contributed various chapters to books on international law and Procedure:

- Chapter on Article 112 on the creation, composition, powers and functioning of the Assembly of States Parties to the ICC Statute in "Code of International Criminal Law and Procedure, Annotated", by Paul de Hert and Jean Flamme (eds.)

- Chapter on Article 70 of the Rome Statute and accompanying RPE on Offences Against the Administration of Justice in "Guidelines ”Commentary on the Law of the International Criminal Court” (CLICC)", by Mark Klamber (ed.)

- Chapter on Amnesties, Minority and Statutes of Limitation in "Blackstone's International Criminal Practice", Edited by John R.W.D. Jones QC and Misa Zgonec-Rozej (forthcoming).