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The nature of the request requirement for collective self-defence (2023)
Presentation / Conference
Green, J. (2023, March). The nature of the request requirement for collective self-defence

The right of collective self-defence has been invoked more by states over the last 10 years than at any other point in the UN era – including it forming one of the (spurious) justifications advanced by Russia for its 2022 invasion of Ukraine. Most of... Read More about The nature of the request requirement for collective self-defence.

Military assistance on request and collective self-defence (2022)
Presentation / Conference
Green, J. (2022, June). Military assistance on request and collective self-defence. Presented at International Law Association Biennial Conference, Lisbon, Portugal

The concepts of military assistance on request (or ‘intervention by invitation’) and collective self-defence are, in some respects, strikingly similar. They both involve a prima facie unlawful use of force by one state, undertaken at the request of... Read More about Military assistance on request and collective self-defence.

Russia’s attack on Ukraine and the jus ad bellum (2022)
Journal Article
Green, J. A., Henderson, C., & Ruys, T. (2022). Russia’s attack on Ukraine and the jus ad bellum. Journal on the Use of Force and International Law, 9(1), 4-30. https://doi.org/10.1080/20531702.2022.2056803

The 24 February 2022 Russian invasion of–or ‘special military operation’ in–Ukraine has sent shock waves across the globe. In this editorial the Editors-in-Chief of JUFIL examine in detail the legal justifications advanced by President Putin for Russ... Read More about Russia’s attack on Ukraine and the jus ad bellum.

The rise of twiplomacy and the making of customary international law on social media (2022)
Journal Article
Green, J. A. (2022). The rise of twiplomacy and the making of customary international law on social media. Chinese Journal of International Law, 21(1), 1-53. https://doi.org/10.1093/chinesejil/jmac007

Social media usage by States has increased exponentially in recent years. This phenomenon, known as "twiplomacy", has become ubiquitous. Given that almost every State in the world now issues statements via social media, this article examines the pote... Read More about The rise of twiplomacy and the making of customary international law on social media.

The rise of twiplomacy and the making of customary international law on social media (2021)
Presentation / Conference
Green, J. (2021, September). The rise of twiplomacy and the making of customary international law on social media. Presented at Society of Legal Scholars Annual Conference, Durham University

In recent years, there has been a huge rise in ‘twiplomacy’: that is, the use of social media as a means of direct diplomatic communication by states. Social media posts from the accounts of governments, government departments and individual high ran... Read More about The rise of twiplomacy and the making of customary international law on social media.

Disasters caused in cyberspace (2016)
Book Chapter
Green, J. A. (2016). Disasters caused in cyberspace. In S. C. Breau, & K. L. H. Samuel (Eds.), Research Handbook on Disasters and International Law (406-427). Cheltenham: Edward Elgar

The Chilcot Report: Some thoughts on international law and legal advice (2016)
Journal Article
Green, J. A., & Samuel, S. (2017). The Chilcot Report: Some thoughts on international law and legal advice. Journal of Conflict and Security Law, 22(2), 333-352. https://doi.org/10.1093/jcsl/krw023

The Report of the Iraq (Chilcot) Inquiry was finally published, 7 years after the Inquiry's creation, on 6 July 2016. The scope of the Inquiry's work was vast and this was reflected in the enormous size of its final Report. The publication of the Rep... Read More about The Chilcot Report: Some thoughts on international law and legal advice.

The ratione temporis elements of self-defence (2015)
Journal Article
Green, J. A. (2015). The ratione temporis elements of self-defence. Journal on the Use of Force and International Law, 2(1), 97-118. https://doi.org/10.1080/20531702.2015.1043097

This article focuses on one particular factor that is of crucial importance to all self-defence actions. It is a factor that is almost always present in the application and appraisal of the right, but one that is not always explicitly engaged with: t... Read More about The ratione temporis elements of self-defence.