Professor Mettraux acts as counsel for defendants charged with international crimes. For the past decade, he has been appearing before various international criminal courts and tribunals. Among his clients are General Sefer Halilovic (first commander of the Army of Bosnia and Herzegovina), Ljube Boskoski (then Minister of Interior of the Republic of Macedonia), General Ante Gotovina (Croatian Army), General Petkovic (Bosnian-Croat Army), former Rwandan Minister Augustin Ngirabatware and Jean-Pierre Bemba Gombo (former Vice-President of the Democratic Republic of Congo).
Dr Mettraux is also a Panel Member of the EU's Human Rights Review Panel (www.hrrp.eu) and is a guest lecturer at the University of Fribourg (Switzerland).
He has published extensively in the field of international criminal law and procedure, including three books with Oxford University Press. He is currently working on a book pertaining to human rights. He also animates a blog devoted to international criminal justice and transitional justice (www.ilawyerblog.com).