Professor Dan Joyner

Dan Joyner is Professor of Law and Director of International Programs at the University of Alabama School of Law in the U.S.  He is the author of International Law and the Proliferation of Weapons of Mass Destruction (OUP, 2009), Interpreting the Nuclear Nonproliferation Treaty (OUP, 2011), and the Iran’s Nuclear Program and International Law: From Confrontation to Accord (OUP, 2016).  He is also co-editor, with Marco Roscini, of Nonproliferation Law as a Special Regime: A Contribution to Fragmentation Theory in International Law (CUP, 2012). In addition to his academic work, he is a legal consultant, providing advice and training to sovereign states and private parties on matters related to international nuclear energy and nuclear nonproliferation law. His publications and experience can be viewed at

Professor Marco Roscini

Marco Roscini is Professor of International Law at the University of Westminster in London, UK. He specialises in the international law of armed conflict (both jus ad bellum and jus in bello) and WMD non-proliferation law. He is the author of Le zone denuclearizzate (Nuclear weapon-free zones, 2003) and of Cyber Operations and the Use of Force in International Law (OUP, 2014). He is also the co-editor, with Daniel H. Joyner, of Non-proliferation Law as a Special Regime: A Contribution to Fragmentation Theory in International Law (CUP, 2012). Marco is a member of the International Law Association’s Committee on Nuclear Weapons, Non-proliferation and Contemporary International Law and of the European Union Non-proliferation Consortium. For his research and expertise, see

Mr. Pierre-Emmanuel Dupont

Pierre-Emmanuel Dupont is a lawyer (Paris, France), specialized in public international law and international investment law. He has worked, advised and published articles for several years on non-proliferation and disarmament issues. He is  a member of the International Law Association’s Committee on Nuclear Weapons, Non-proliferation and Contemporary International Law.

Dr. Zeray Yihdego

Zeray Yihdego is a Senior Lecturer in Law at the University of Aberdeen School of Law where he teaches international law, humanitarian law and international human rights law. He is the author of The Arms Trade and International Law (Hart: Oxford, 2007) and also serves as a member of the UN Expert Group on the UN Protocol on Firearms 2001 since 2009. For his other publications on various issues of international law including arms control law visit′

Professor Eric Myjer

Eric Myjer is Professor of Public International Law at the University of Utrecht, and Co-Director of the Centre for Conflict and Security Law. He is a member of the Dutch government’s Standing Advisory Committee on Issues of Public International Law, and a member of the International Law Association’s Committee on the Use of Force. Further information on his experience and publications is at

Professor David Fidler

David Fidler is the James Louis Calamaris Professor of Law at the Indiana University School of Law.  He is a recognized expert on international law and global health, cybersecurity and cyberweapons, biosecurity threats posed by biological weapons and bioterrorism, the international legal and policy implications of “non-lethal” weapons, counterinsurgency and rule of law operations, and the globalization of baseball.  Further information on his experience and publications can be found at

Professor James Fry

James Fry is Assistant Professor of Law on the University of Hong Kong Faculty of Law. He is a prolific author on arms control law and other subjects. His previous experience includes positions with the U.S. Department of State’s Office of the Legal Adviser, and the International  Litigation and Arbitration Group of the law firm Skadden, Arps, Slate, Meagher  & Flom in New York City. Further information on his experience and publications can be found at

Dr. Gro Nystuen

Gro Nystuen is Senior Partner at the International Law and Policy Institute (ILPI) in Oslo where she works on public international law issues, including the ILPI Nuclear Weapons Project (, humanitarian law, law of armed conflict and disarmament.  She took part in the diplomatic processes on the Mine Ban Convention in 1996-1997 and the Convention on Cluster Munitions in 2007-2008, negotiations pertaining to the CCW, as well as the Arms Trade Treaty negotiations 2010 – 2012, on behalf of the Norwegian Ministry for Foreign Affairs. Dr. Nystuen works part time as Associate Professor at the University of Oslo and at the Defense Staff University College in Oslo. She worked in the Norwegian Ministry for Foreign Affairs from 1991 to 2005. She published her doctoral dissertation on the Dayton Peace Agreement, and has published a number of articles on international law, in areas such as international humanitarian law, human rights law, international terrorism, corporate social responsibility and jus ad bellum issues.  More information on her experience and publications can be found at

Dr. Milagros Álvarez-Verdugo                                    

Milagros Álvarez is Associate Professor of International Law and EU Law at the University of Barcelona. Her work for the past decade has focused primarily on the nonproliferation of WMD and the EU security and defense policy. She is the author of Incidence of the Security Council on the Legal Regime of Nuclear Weapons (Barcelona, J.M.Bosch, 2007 –in Spanish) and The Security and Defense Policy of the European Union (Madrid, Dykinson, 2003 –in Spanish). She has published articles in international journals such as the European Journal of International Law and European Foreign Affairs Review, and in the major Spanish journals in the field. Currently she is a visiting scholar at Cornell University (2012-13).  She has visited previously at Cornell (2004-2005), and Harvard University (2005), and has been Visiting Professor at the Law School of the University of Puerto Rico (2004 and 2008).

Dr. Jean-Pascal Zanders

Jean-Pascal Zanders is an independent researcher and consultant at The Trench.  His research areas cover armament, disarmament and non-proliferation of chemical, biological, radiological and nuclear weapons. He was Project Leader of the Chemical and Biological Warfare Project at the Stockholm International Peace Research Institute (SIPRI) from October 1996 until August 2003, Director of the Geneva-based BioWeapons Prevention Project (BWPP) from April 2003 until May 2006, and Senior Research Fellow at the European Union Institute for Security Studies (June 2008-May 2013). He holds Masters Degrees in Germanic Philology-Linguistics (1980) and Political Sciences (1992) and a PhD in Political Sciences (1996) from the Free University of Brussels.

(Contributions to this blog are in a private capacity only.)

Dr. Ralf Trapp

Ralf Trapp is an independent consultant in the area of chemical and biological weapons arms control. A chemist and toxicologist by training, he worked with the GDR Academy of Sciences in the field of chemical toxicology between 1978 and 1990. From 1985 to 1987 he was a guest researcher at the Stockholm International Peace Research Institute (SIPRI), and from 1991 to 1992 at the Stiftung Wissenschaft und Politik Ebenhausen (Germany). He acted as technical adviser on chemical weapons disarmament to the GDR and subsequently the German delegations to the Geneva Conference on Disarmament. In 1993, he joined the Technical Secretariat of the OPCW where he worked in the areas of industry verification, verification policy and review, international cooperation, government relations and political affairs, and strategic planning. From 1998 to 2006, he was the secretary of the OPCW’s Scientific Advisory Board. After leaving the OPCW in 2006, he has provided consulting services to, amongst others, the OPCW, the European Commission, the United Nations, the ICRC and SIPRI.