Russell Buchan is Senior Lecturer in International Law at the University of Sheffield, UK. He has published widely in the field of public international law, including three monographs: International Law and the Construction of the Liberal Peace (Hart, 2013), Cyber Espionage and International Law (Hart, 2018) and Regulating the Use of Force in International Law: Stability and Change (Edward Elgar Publishing, 2021). He is also Co-Editor in Chief of the Journal of International Humanitarian Legal Studies.