Rogier obtained his law degree from the University of Utrecht (2003) and a specialised LL.M. from the University of Nottingham (2004). He is a Legal Officer in the Trial Division of the International Criminal Court and a research-fellow at the Military Law Section of the Netherlands Defence Academy. Prior to his present positions, he worked, inter alia, as a researcher at the Netherlands Defence Academy, for the International Crimes Section of the Dutch National Prosecutor’s Office, as an Associate Legal Officer in Chambers at the International Criminal Tribunal for the former Yugoslavia, and as a legal adviser at the IHL Division of the Netherlands Red Cross.

He has given (guest) lectures at a number of universities and military academies, in the Netherlands and abroad. From 2009-2014, he taught a course on international humanitarian law (IHL) as adjunct-lecturer at the Hague University of Applied Sciences, and in 2014-2015, he taught the master course on International Criminal Law at the University for Peace in Costa Rica. In the 2018-2019 academic year, he co-taught the international crimes course of the VU University Amsterdam's LL.M. programme.

Rogier is a member of the research programme on “Law of Armed Conflict and Peace Operations” of the Amsterdam Center for International Law (of the University of Amsterdam), participates in the Leiden University’s Kalshoven/Gieskes Forum on IHL, and is affiliated with the Criminal Law section of the VU University Amsterdam. At the former university, he is writing a PhD thesis. His publications deal with IHL, international criminal law, and the interplay between these two branches of international law.

Rogier frequently speaks at conferences, and gives lectures as part of (summer) courses and trainings, such as those provided by Professionals in Humanitarian Assistance and Protection. He is the co-editor of the Armed Groups and International Law blog and regularly contributes to other international law blogs.

Research

Mr Bartels's research interests concern international humanitarian law and the related fields international law, such as international criminal law, international human rights law, and the law on the use of force. His doctoral research focusses on the interplay between international humanitarian law and international criminal law. He is supervised by Prof. Terry Gill (UvA/ Netherlands Defence Academy ) and Prof. Jann Kleffner (Swedish National Defence College).

His research is conducted within the joint research programme on 'The Role of Law in Armed Conflict and Peace Operations'  of the Amsterdam Center for International Law (of the UvA) and the Netherlands Defence Academy .

Publications

• 'A Fine Line Between Protection and Humanisation: The Interplay Between the Scope of Application of International Humanitarian Law and Jurisdiction over Alleged War Crimes Under International Criminal Law', in 20 Yearbook of International Humanitarian Law (2017), pp 37-74
• 'Armistice', 'Evacuation', 'Non-International Armed Conflict', 'Reciprocity', 'Reconnaisance Missions' (five entries) in Drazan Djukić and Niccolo Pons (eds), The Companion to International Humanitarian Law (Brill Nijhoff, 2018)
• 'The Interplay between International Human Rights Law and International Humanitarian Law during International Criminal Trials', 12(1) Human Rights and International Legal Discourse (2018), pp 44-61
• 'The Relationship between International Humanitarian Law and the Notion of State Sovereignty', 23(3) Journal of Conflict and Security Law (2018), pp 461-486         
• 'When Do Terrorist Organisations Qualify as "Parties to an Armed Conflict" Under International Humanitarian Law?', 56(2) The Military Law and the Law of War Review (2017-2018), pp 1-20
• 'Legitimacy and ICC Jurisdiction following Security Council Referrals', in Nobuo Hayashi and Cecilia M. Bailliet (eds), The Legitimacy and Effectiveness of International Criminal Tribunals (Cambridge University Press 2017), pp 141-187
• 'Law, Justice and a Potential Security Gap: The "Organization" Requirement in International Humanitarian Law and International Criminal Law', 21(1) Journal of Conflict and Security Law (2016), pp 29-48 (together with Katherine Fortin)
• 'Denying Humanitarian Access as an International Crime in Times of Non-International Armed Conflict: The Challenges to Prosecute and Some Proposals for the Future', 48(3) Israel Law Review (2015), pp 281-307
• 'From Jus in Bello to Jus Post Bellum: When do Non-International Armed Conflicts End?', in Carsten Stahn, Jennifer S. Easterday and Jens Iverson (eds), Jus Post Bellum: Mapping the Normative Foundations (Oxford University Press 2014), pp 297-314 (free online access)
• 'Discrepancies between International Humanitarian Law on the Battlefield and in the Courtroom: the Challenges of Applying International Humanitarian Law During International Criminal Trials', in Marielle Matthee, Birgit Toebes and Marcel Brus (eds), Armed Conflict and International Law: In Serach of the Human Face - Liber Amicorum in Memory of Avril McDonald (T.M.C. Asser Press 2013), pp 339-378
• 'Dealing with the Principle of Proportionality in Armed Conflict in Retrospect: the Application of the Principle in International Criminal Trials', 46(2) Israel Law Review (2013), pp 271-315
• Six commentaries, inter alia, to Articles 9, 51 and 68 of the Rome Statute of the International Criminal Court', in Paul De Hert, Matthias Holvoet, Jean Flamme & Olivia Struyven (eds),Code of international criminal law and procedure, annotated (Larcier 2013), pp 210-213 
• 'Verspreiding en verbreiding van het humanitair oorlogsrecht in vredestijd - De rol van nationale Rode Kruis/Rode Halve Maan verenigingen', 103(1) Militair Rechtelijk Tijdschrift (2010)
• 'Timelines, Borderlines and Conflicts: The Historical Evolution of the Legal Divide between International and Non-International Armed Conflicts', 91 International Review of the Red Cross No. 873 (2009), pp 35-67
• 'Gewapend conflict is geen eenduidig begrip', 4  International Humanitair Recht in de Kijker (2008)
• 'National Red Cross/Red Crescent Societies and International Humanitarian Law', 3 Israel Defense Forces Law Review (2007-2008), pp 58-69
• 'Humanitarian Intervention After 9/11: The Link between Ius ad Bellum and Ius in Bello', in Willem J.M. van Genugten, Michael P. Scharf & Sasha E. Radin (eds.), Criminal Jurisdiction 100 years after the 1907 Hague Peace Conference - Proceedings of the 8th Hague Joint Conference (2007) , T.M.C. Asser Press (2009) (Chapter 9)
• 'Ondanks (verdrags)verplichtingen geen mensenrechteneducatie in Nederland?', 83(43) Nederlands Juristenblad (5 December 2008) (with Barbara Oomen en Ton van den Brandt)
• 'Definitie van gewapend conflict: Hoe "binnenlands" is "niet-internationaal"', 83(38) Nederlands Juristenblad (31 October 2008) (with Jeroen van den Boogaard) (and accompanying 'Naschrift' in Vol. 84 Issue 6 of 13 February 2009)
• Book Review of: Paul Ducheine, Krijgsmacht, Geweldgebruik & Terreurbestrijding, 177(9) Militaire Spectator (2008)
• 'Prosecutor v. Galić - Commentary', in André Klip and Göran Sluiter (eds), Annotated Leading Cases of International Criminal Tribunals 15: The International Criminal Tribunal for the former Yugoslavia Vol. 14 October 2003 - 5 December 2003 (Intersentia 2008)