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[David L. Sloss is the John A. & Elizabeth H. Sutro Professor of Law at Santa Clara University. He is currently writing a book about information warfare and social media, to be published by Stanford University Press.] Disinformation on social media poses a threat to liberal democracies around the world. Recent decisions by Twitter and Facebook to limit distribution of a New York Post article...

[Dapo Akande, Antonio Coco, Talita de Souza Dias, Duncan B. Hollis, Harold Hongju Koh, James C. O’Brien and Tsvetelina van Benthem.] Election insecurity constitutes a dangerous global threat. Thirteen prominent intelligence experts stated, in a brief filed in U.S. federal court, that: “Over the last several years, evidence has emerged that Moscow has launched an aggressive series of active measure campaigns to interfere...

[Adriano Iaria is a Humanitarian Advocacy Officer for the Italian Red Cross and a faculty member of the Master’s course in Intelligence and Security for Link Campus University in Rome, Italy. The views, thoughts, and opinions expressed in the text belong solely to the author, and not necessarily to the author's employer, organization, committee or other group or individual.] Last May, in the midst of the ongoing...

[Chris Jenks is the Director of the Criminal Clinic and Associate Professor of Law at SMU Deadman School of Law.] How is ‘attack’ defined under international humanitarian law (IHL), particularly in the context of cultural property and hospitals? Opinio Juris readers will likely have already answered the first part of the question by referring to Article 49 of Additional Protocol I (AP I) to the 1949...

[Michael Lysander Fremuth is Professor for Fundamental and Human Rights at the University of Vienna and Scientific Director of the Ludwig Boltzmann Institute of Fundamental and Human Rights. Andreas Sauermoser is a researcher and PhD candidate in the Department Human Dignity and Public Security at the Ludwig Boltzmann Institute of Fundamental and Human Rights. Konstantina Stavrou is a researcher and PhD candidate at the Ludwig Boltzmann Institute of...

[Verity Robson is the Legal Counsellor at the Permanent Mission of the United Kingdom to the United Nations and other International Organisations in Geneva.]  Accuracy counts. It is therefore necessary to provide a short response to the recent critique by John Heieck of my post on the scope of the duty in Common Article 1 of the Four Geneva Conventions of 1949 to ensure respect for those...

[Robert Heinsch is an Associate Professor of Public International Law at the Grotius Centre for International Legal Studies of Leiden University, and is the Director of its Kalshoven-Gieskes Forum on International Humanitarian Law as well as the founder of the Leiden IHL Clinic. Sofia Poulopoulou, LL.M. is a PhD Candidate at the Grotius Centre for International Legal Studies at Leiden University, and staff member...

[Maria Xiouri is a Lecturer in Law at the University of Bedfordshire.] On 2 August 2019 the US Secretary of State, Michael Pompeo, announced that the US withdrawal from the Treaty on the elimination of the intermediate-range and shorter-range missiles signed on 8 December 1987 between the US and the Union of Soviet Socialist Republics (‘INF Treaty’) took effect.This post briefly analyses the factual and legal background...

[Kathryn Hampton is a senior program officer with Physicians for Human Rights, based in New York City.] On 31 August, a Portland, Oregon, police officer was filmed by a journalist as the officer ran after retreating protestors in a Black Lives Matter protest: he is shown tackling one protestor to the pavement at a full run and then repeatedly punching him. The protestor was pinned...

[Anne Schintgen is currently the Head of the Europe Liaison Office of the Special Representative of the UN Secretary-General for Children and Armed Conflict. She previously worked in New York as a Political Affairs Officer with the Special Representative of the UN Secretary-General for Children and Armed Conflict.  Photo © Anne Schintgen – OSRSG-CAAC Field Mission to Wau Shilluk South Sudan in August 2017 - Military use of a school ]  The...