| 'Armed attack'and Article 51 of the UN Charter: evolutions in customary law and practice T Ruys Cambridge University Press, 2010 | 327 | 2010 |
| The Meaning of “Force” and the Boundaries of the Jus Ad Bellum: Are “Minimal” Uses of Force Excluded from UN Charter Article 2 (4)? T Ruys American Journal of International Law 108 (2), 159-210, 2014 | 202 | 2014 |
| Attacks by private actors and the right of self-defence T Ruys, S Verhoeven Journal of Conflict and Security Law 10 (3), 289-320, 2005 | 140 | 2005 |
| The United Nations and the European Union: an ever stronger partnership J Wouters, F Hoffmeister, T Ruys TMC Asser Press, 2006 | 105 | 2006 |
| Of arms, funding and “non-lethal assistance”—issues surrounding third-state intervention in the Syrian Civil War T Ruys Chinese Journal of International Law 13 (1), 13-53, 2014 | 95 | 2014 |
| Russia’s attack on Ukraine and the jus ad bellum JA Green, C Henderson, T Ruys Journal on the Use of Force and International Law 9 (1), 4-30, 2022 | 86 | 2022 |
| Secondary sanctions: a weapon out of control? The international legality of, and European Responses to, US secondary sanctions T Ruys, C Ryngaert British Yearbook of International Law, braa007, 2020 | 84 | 2020 |
| Security Council reform: A new veto for a new century J Wouters, T Ruys Mil. L. & L. War Rev. 44, 139, 2005 | 83 | 2005 |
| Weathering the storm: Legality and legal implications of the Saudi-led military intervention in Yemen T Ruys, L Ferro International & Comparative Law Quarterly 65 (1), 61-98, 2016 | 78 | 2016 |
| Quo vadit jus ad bellum?: a legal analysis of Turkey's military operations against the PKK in Northern Iraq. T Ruys Melbourne Journal of International Law 9 (2), 334-364, 2008 | 68 | 2008 |
| Crossing the thin blue line: An inquiry into Israel's recourse to self-defense against Hezbollah T Ruys Stan. J. Int'l L. 43, 265, 2007 | 64 | 2007 |
| The ‘protection of nationals’ doctrine revisited T Ruys Journal of Conflict & Security Law 13 (2), 233-271, 2008 | 59 | 2008 |
| The European Union and peacebuilding: Policy and legal aspects S Blockmans, J Wouters, T Ruys TMC Asser Press, 2010 | 48 | 2010 |
| The use of force in international law: a case-based approach T Ruys, O Corten, A Hofer Oxford University Press, 2018 | 46 | 2018 |
| Sanctions, retortions and countermeasures: concepts and international legal framework T Ruys Research handbook on UN sanctions and international law, 19-51, 2017 | 45 | 2017 |
| The Syrian Civil War and the Achilles' heel of the law of non-international armed conflict T Ruys Stan. J. Int'l L. 50, 247, 2014 | 40 | 2014 |
| International law: a European perspective J Wouters, C Ryngaert, T Ruys, G De Baere Bloomsbury Publishing, 2018 | 35 | 2018 |
| ‘Creeping’advisory jurisdiction of international courts and tribunals? The case of the international tribunal for the law of the sea T Ruys, A Soete Leiden Journal of International Law 29 (1), 155-176, 2016 | 31 | 2016 |
| License to Kill-State-Sponsored Assassination under International Law T Ruys Mil. L. & L. War Rev. 44, 13, 2005 | 31 | 2005 |
| Criminalizing Aggression: How the Future of the Law on the Use of Force Rests in the Hands of the ICC T Ruys European Journal of International Law 29 (3), 887-917, 2018 | 25 | 2018 |
