Jan Klabbers, born 13 August 1963, in Heumen, the Netherlands.Professor of International Law at the University of Helsinki. Whewell Professor of International Law-elect, Cambridge University (as of 1 October 2025). Member of the EU Panel to select panelists under bilateral trade and sustainable development agreements. Alternate Arbitrator, OSCE Court of Conciliation and Arbitration. Member, Finnish Academy of Arts and Sciences (elected 2014).Visiting Professor/Fellow (invited) at Hofstra Law School (2007); Graduate Institute for International and Development Studies (2008, 2013); Straus Institute for the Advanced Study of Law and Justice, New York University (2009-2010); Université Paris-II, Panthéon-Assas (2011); Armenian Diplomatic Academy, Yerevan (2015, 2016, 2021, 2022, 2023, 2024); New York University Law School (2015); Erasmus Law School, Rotterdam (2016-2018); Université Paris-I, Sorbonne (2017, 2022); LUISS Guido Carli (2021, 2022, 2023); La Sapienza University, Rome (2024).Stephan Hobe was born in Bremen, Germany, on 11 December 1957.He is the Director of the Institute of Air Law, Space Law and Cyber Law and Co-Director of the International Investment Law Centre Cologne. He is a member of various scientific associations, including President of the German Society of International Law, Vice-President of the German Association of International Law (the German ILA), a former member and now honorary member of the Board of Directors of the International Institute of Space Law, Chairman of the Panel of Legal Experts of the International Telecommunications Satellite Organization and Committee, and Board Member of the European Air Law Association as well as of the European Centre for Space Law. He is currently the Director of the Space Law Committee of the International Law Association and is still representing parties in litigation and active in investment arbitration.His scientific oeuvre spans more than 200 publications in public international law, European law, air law and space law, including Einführung in das Völkerrecht (most recently, 11th ed., 2020), Europarecht (11th ed., 2023) and Space Law (2nd ed., 2023). He is also the co-editor of the three-volume Cologne Commentary on Space Law and the collective work Cologne Compendium on Air Law. He edits the Zeitschrift für Luft- und Weltraumrecht / German Journal of Air and Space Law / Revue allemande de droit aérien et spatial, and has published approximately 350 articles on German public law, public international law, international investment law, air law, space law and cyber law.He teaches as a guest professor at various universities in Europe, Africa and Asia, is the co-founder of the Institute of Air and Space Law at the Gujarat National Law University, Gandhinagar, Gujarat, India, and holds honorary doctoral degrees from the Universities of Sofia, Bulgaria, and the Aviation University in Kiev, Ukraine.