Professor Nicholas Tsagourias

School of Law

Professor of International Law

Staff photo of Professor Nicholas Tsagourias
Profile picture of Staff photo of Professor Nicholas Tsagourias
Nicholas.Tsagourias@sheffield.ac.uk
Bartolome House

Full contact details

Professor Nicholas Tsagourias
School of Law
Bartolome House
Winter Street
Sheffield
S3 7ND
Profile

I am Professor of International Law at the University of Sheffield, joining the University in 2012 from the University of Glasgow where I was Professor of International Law and Security. I completed my law studies at the University of Thessaloniki in Greece, obtaining an LL.M. from the University of Bristol and my Ph.D from the University of Nottingham. My teaching and research interests are in the fields of international law and the use of force, international humanitarian law, international criminal law, collective security law, peacekeeping, United Nations Law, international and European constitutional theory and law and cybersecurity. I am widely published in these fields.

I am Director of the Sheffield Centre for International and European Law. I sit on the editorial board for the Journal of Conflict and Security Law and for the Journal on the Use of Force and International Law. I am convenor of the European Society of International Law Interest Group on Peace and Security. I am member of the AHRC Peer Review College. I hold a visiting post at the University of Umea, Sweden and have taught at many Universities in Europe and the USA.

Qualifications
  • PhD, University of Nottingham
  • LLM, University of Bristol
  • LLB (Hons), University of Thessaloniki, Greece
Research interests
  • International Law and the use of Force
  • International Humanitarian Law
  • International Criminal Law
  • Collective Security Law
  • Cybersecurity

Member of the Sheffield Centre for International and European Law.

Publications

Books

  • Tsagourias N & Morrison A (2023) . Cambridge University Press.
  • Tsagourias NK (2022) . Manchester University Press.
  • Buchan R & Tsagourias N (2022) Regulating the Use of Force in International Law Stability and Change. Edward Elgar Publishing.
  • (2021) . Edward Elgar Publishing.
  • (2021) . Edward Elgar Publishing.
  • Buchan R & Tsagourias N (2021) Regulating the Use of Force in International Law Stability and Change. Edward Elgar Publishing.
  • Buchan R & Tsagourias N (2021) . Edward Elgar Publishing.
  • Tsagourias N & Morrison A (2018) . Cambridge University Press.
  • Tsagourias N & Buchan R (2015) Research Handbook on International Law and Cyberspace. Edward Elgar Publishing.
  • Tsagourias N & White N (2013) . Cambridge University Press.
  • Tsagourias N (2007) . Cambridge University Press.
  • Tsagourias N (2007) Transnational Constitutionalism: International and European Models. Cambridge University Press.
  • Tsagourias NK (2000) Jurisprudence of International Law: The Humanitarian Dimension. Manchester University Press.

Edited books

  • Buchan R, Franchini D & Tsagourias N (Eds.) (2023) . Cambridge University Press.
  • Gazzini T & Tsagourias N (Ed.) (2012) The Use of Force in International Law. Ashgate.

Journal articles

  • Buchan R, Franchini D & Tsagourias N (2024) Introduction. Peaceful Settlement of Inter State Cyber Disputes, 1-10.
  • Buchan R & Tsagourias N (2023) . Journal on the Use of Force and International Law, 10(2), 252-270.
  • Tsagourias N (2023) . German Law Journal, 24(3), 494-507.
  • Cimiotta E, Harrison A & Tsagourias N (2022) . Journal of Conflict and Security Law, 27(2), 131-134.
  • Buchan R & Tsagourias N (2022) . International Review of the Red Cross, 104(919), 1171-1198.
  • Tsagourias N & Biggio G (2022) Cyber peacekeeping operations and the regulation of the use of lethal force. International Law Studies, 99, 37-71.
  • Tsagourias N & Biggio G (2021) .
  • Buchan R & Tsagourias N (2020) Autonomous cyber weapons and command responsibility. International Law Studies, 96, 645-673.
  • Tsagourias N & Farrell M (2020) . European Journal of International Law, 31(3), 941-967.
  • Tsagourias N (2020) . International Community Law Review, 22(3-4), 291-309.
  • Sander B & Tsagourias N (2020) . Journal of International Humanitarian Legal Studies, 11(2), 331-347.
  • Tsagourias N (2020) The rule of law in cyberspace: a hybrid and networked concept?. Heidelberg Journal of International Law, 80(2), 433-451.
  • Tsagourias N (2019) . AJIL Unbound, 113, 71-75.
  • Tsagourias N (2018) . Indonesian Journal of International Law, 18(4).
  • Tsagourias N & Buchan RJ (2018) Automatic Cyber Defence and the Laws of War. German Yearbook of International Law, 60(2017), 203-237.
  • Buchan R & Tsagourias N (2017) . International Community Law Review, 19(2-3), 165-193.
  • Tsagourias N (2016) . American Journal of International Law, 110(3), 609-614.
  • Buchan R & Tsagourias N (2016) . Journal of Conflict and Security Law, 21(3), 377-381.
  • Tsagourias N (2016) . Journal of Conflict and Security Law, 21(3), 455-474.
  • Tsagourias N (2016) . Leiden Journal of International Law, 29(3), 801-825.
  • Tsagourias N (2015) . Baltic Yearbook of International Law Online, 14, 105-123.
  • Tsagourias N (2015) . Policing and Society, 25(4), 437-438.
  • Tsagourias N (2013) . Yearbook of International Humanitarian Law, 15(3), 19-43.
  • Tsagourias N (2012) Intervention. Oxford Bibligoraphies Online.
  • Tsagourias N (2012) . Journal of Conflict and Security Law, 17(2), 229-244.
  • Buchan R & Tsagourias N (2012) . Journal of Conflict and Security Law, 17(2), 183-186.
  • Tsagourias N (2012) . European Journal of International Law, 23(1), 255-266.
  • Tsagourias N (2012) . Edinburgh Law Review, 16(1), 140-141.
  • Buchan R & Tsagourias N (2012) . International Community Law Review, 14(4), 305-307.
  • Tsagourias N (2011) . Leiden Journal of International Law, 24(4), 1062-1065.
  • Tsagourias N (2011) Security Council Legislation, Article 2(7) of the UN Charter, and the Principle of Subsidiarity. Leiden Journal of International Law, 24(3), 539-559.
  • Tsagourias N (2010) . British Yearbook of International Law, 80(1), 446-448.
  • Tsagourias N (2009) The Inevitable Independence of Kosovo. Amsterdam Law Forum, 39-41.
  • Tsagourias N, Akande D, Murithi T, Gazzini T & Milano E (2007) Old Questions and New Challenges for the UN Security System: The Role of the Security Council in the Light of the Charters Reform. Journal of International Law and Policy, 1-48.
  • Tsagourias N (2006) . Journal of Conflict and Security Law, 11(3), 465-482.
  • Tsagourias N (2006) Negotiating the Euro-Mediterranean Partnership: Strategic action in EU Foreign Policy?. JCMS-JOURNAL OF COMMON MARKET STUDIES, 44(2), 442-442.
  • Boeger N & Tsagourias N (2005) . Common Law World Review, 34(3), 287-294.
  • Tsagourias N (2004) The Shifting Laws on the Use of Force and the Trivialization of the UN Collective Security System: the Need to Reconstitute It. Netherlands Yearbook of International Law, 34, 55-87.
  • Tsagourias N (2004) . International and Comparative Law Quarterly, 53(3), 731-737.
  • Tsagourias N (2004) . Leiden Journal of International Law, 17(3), 642-644.
  • Tsagourias N (2004) Southern Europe and the making of the European Union. JOURNAL OF COMMON MARKET STUDIES, 42(1), 220-221.
  • Tsagourias N (2004) Application for Revision of the Judgment of 11 July 1996. International and Comparative Law Quarterly, 731-737.
  • Tsagourias N (2003) . Leiden Journal of International Law, 16(2), 397-399.
  • Tsagourias N (2003) Globalization, Order and the Rule of Law. Finnish Yearbook of International Law, 247-265.
  • Tsagourias N (2002) Review procedures for community treaties: From international law to constitutional law. JOURNAL OF COMMON MARKET STUDIES, 40(3), 553-553.
  • Tsagourias N (2001) . Leiden Journal of International Law, 14(3), 719-721.
  • Tsagourias N (2001) . Journal of Conflict and Security Law, 6(1), 159-160.
  • Tsagourias N (2001) Humanitarian Intervention and Legal Principles. International Legal Theory, 7, 83-98.
  • Tsagourias N (2000) Humanitarian Intervention after Kosovo and Legal Discourse: Self deception or Self consciousness. Leiden Journal of International Law, 13, 11-32.
  • Tsagourias N (1998) . Journal of Conflict and Security Law, 3(1), 129-131.
  • Tsagourias N (1997) . Journal of Conflict and Security Law, 2(1), 103-104.
  • Tsagourias N (1996) The Nicaragua Case and the use of force : the theoretical construction of decision and its deconstruction. Journal of Armed Conflict Law, 1, 81-93.
  • Gawkrodger DJ (1994) . Clinical and Experimental Dermatology, 19(6), 537-537.
  • Fenton DE & Czugler M (1992) . Journal of Inclusion Phenomena and Molecular Recognition in Chemistry, 13(2), 203-204.
  • Tsagourias N () Necessity and the Use of Force: A Special Regime. Netherlands Yearbook of International Law 2010, 41, 11-44.

Book chapters

  • Buchan R & Tsagourias N (2024) , Research Handbook on Cyberwarfare (pp. 317-334). Edward Elgar Publishing
  • Middleton F & Tsagourias N (2024) , Global Cybersecurity and International Law (pp. 63-86). Routledge
  • Buchan R, Franchini D & Tsagourias N (2023) , The Changing Character of International Dispute Settlement (pp. 1-12). Cambridge University Press
  • Tsagourias N & Middleton F (2023) , The Changing Character of International Dispute Settlement (pp. 439-466). Cambridge University Press
  • Tsagourias NK (2022) , Jurisprudence of international law Manchester University Press
  • Tsagourias NK (2022) , Jurisprudence of international law Manchester University Press
  • Tsagourias NK (2022) , Jurisprudence of international law Manchester University Press
  • Tsagourias NK (2022) , Jurisprudence of international law Manchester University Press
  • Tsagourias NK (2022) , Jurisprudence of international law Manchester University Press
  • Tsagourias NK (2022) , Jurisprudence of international law Manchester University Press
  • Tsagourias NK (2022) , Jurisprudence of international law Manchester University Press
  • Tsagourias NK (2022) , Jurisprudence of international law Manchester University Press
  • Tsagourias NK (2022) , Jurisprudence of international law Manchester University Press
  • Tsagourias NK (2022) , Jurisprudence of international law Manchester University Press
  • Tsagourias NK (2022) , Jurisprudence of international law Manchester University Press
  • Tsagourias NK (2022) , Jurisprudence of international law Manchester University Press
  • Tsagourias N & Biggio G (2022) In Myjer EPJ & Marauhn T (Ed.), Research Handbook on International Arms Control Law (pp. 440-455). Edward Elgar
  • Tsagourias N (2021) , Research Handbook on International Law and Cyberspace Edward Elgar Publishing
  • Deplano R & Tsagourias N (2021) , Research Methods in International Law Edward Elgar Publishing
  • Tsagourias N (2021) In Deplano R & Tsagourias N (Ed.), Research Methods in International Law: A Handbook (pp. 283-301). Edward Elgar Publishing
  • Buchan R & Tsagourias N (2021) , Regulating the Use of Force in International Law Edward Elgar Publishing
  • Buchan R & Tsagourias N (2021) , Regulating the Use of Force in International Law Edward Elgar Publishing
  • Buchan R & Tsagourias N (2021) , Regulating the Use of Force in International Law Edward Elgar Publishing
  • Buchan R & Tsagourias N (2021) , Regulating the Use of Force in International Law Edward Elgar Publishing
  • Buchan R & Tsagourias N (2021) , Regulating the Use of Force in International Law Edward Elgar Publishing
  • Buchan R & Tsagourias N (2021) , Regulating the Use of Force in International Law Edward Elgar Publishing
  • Buchan R & Tsagourias N (2021) , Regulating the Use of Force in International Law Edward Elgar Publishing
  • Buchan R & Tsagourias N (2021) , Regulating the Use of Force in International Law Edward Elgar Publishing
  • Buchan R & Tsagourias N (2021) , Regulating the Use of Force in International Law Edward Elgar Publishing
  • Buchan R & Tsagourias N (2021) , Regulating the Use of Force in International Law Edward Elgar Publishing
  • Buchan R & Tsagourias N (2021) , Regulating the Use of Force in International Law Edward Elgar Publishing
  • Buchan R & Tsagourias N (2021) , Regulating the Use of Force in International Law Edward Elgar Publishing
  • Tsagourias N (2021) In Hamid L & Wouters J (Ed.), Rule of Law and Areas of Limited Statehood: Domestic and International Dimensions (pp. 162-182). Edward Elgar Publishing
  • Tsagourias N (2021) , Rule of Law and Areas of Limited Statehood Domestic and International Dimensions (pp. 162-182).
  • Deplano R & Tsagourias N (2021) , Research Methods in International Law A Handbook (pp. 1-7).
  • Tsagourias N (2018) , The Use of Force in International Law (pp. 426-438). Oxford University Press
  • Tsagourias N (2018) , Civil Society and Disarmament (pp. 241-264). UN
  • Tsagourias N (2017) In Ambrus M, Rayfuse R & Werner W (Ed.), Risk and the Regulation of Uncertainty in International Law OUP Oxford
  • Tsagourias N (2016) , British Influences on International Law, 1915-2015 (pp. 299-316). Brill | Nijhoff
  • Tsagourias N & Buchan R (2016) Cyber-Threats and International Law, Security and International Law (pp. 365-390).
  • Tsagourias N (2015) , Research Handbook on International Law and Cyberspace Edward Elgar Publishing
  • (2015) In Tsagourias N & Buchan R (Ed.), Research Handbook on International Law and Cyberspace Edward Elgar Publishing
  • (2015) In Tsagourias N & Buchan R (Ed.), Research Handbook on International Law and Cyberspace Edward Elgar Publishing
  • Tsagourias N (2015) Self-defence, Protection of Humanitarian Values and the Doctrine of Impartiality and Neutrality in Enforcement Mandates In Weller M (Ed.), The Oxford Handbook of the Use of Force in International Law Oxford University Press
  • Tsagourias N (2014) The Tallinn Manual on the International Law Applicable to Cyber Warfare: A Commentary on Chapter IIThe Use of Force In Gill TD, Heinsch R, Gei R, McCormack T, Paulussen C & Dorsey J (Ed.), Yearbook of International Humanitarian Law (pp. 19-43).
  • Tsagourias N (2013) The Prohibition of Threats of Force In White ND & Henderson C (Ed.), Research Handbook on International Conflict and Security Law (pp. 67-88). Edward Elgar Publishing
  • Tsagourias N (2013) Scotland: Independence and Membership of the UN and EU In Rec IFI (Ed.), German Yearbook of International Law (pp. 509-536).
  • Tsagourias N (2013) Whither the Veto: The Responsibility to Protect and the Security Council Veto In Sancin V & Dine MK (Ed.), Responsibility to Protect in Theory and Practice (pp. 157-174). Zalozba
  • Tsagourias N & White ND (2013) The morphology of collective security, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 20-38).
  • Tsagourias N & White ND (2013) The management of normative conflicts, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 319-341).
  • Tsagourias N & White ND (2013) Law as internal facilitator, regulator or constraint, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 281-296).
  • Tsagourias N & White ND (2013) Accountability in Collective Security, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 345-364).
  • Tsagourias N & White ND (2013) Law as external facilitator, regulator or constraint, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 297-318).
  • Tsagourias N & White ND (2013) International responsibility and liability, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 365-384).
  • Tsagourias N & White ND (2013) Collective Security: a historical journey, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 3-19).
  • Tsagourias N & White ND (2013) Individual criminal responsibility, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 385-410).
  • Tsagourias N & White ND (2013) COLLECTIVE SECURITY Theory, Law and Practice PREFACE, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. XI-+).
  • Tsagourias N & White ND (2013) COLLECTIVE SECURITY Theory, Law and Practice Conclusion, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 411-421).
  • Tsagourias N & White ND (2013) The settlement of disputes and preventive security, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 163-192).
  • Tsagourias N & White ND (2013) States and Collective Security, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 63-90).
  • Tsagourias N & White ND (2013) The United Nations, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 91-114).
  • Tsagourias N & White ND (2013) State-building, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 193-218).
  • Tsagourias N & White ND (2013) Sanctions, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 219-246).
  • Tsagourias N & White ND (2013) Triggers, actors and institutions, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 39-59).
  • Tsagourias N & White ND (2013) Regional organisations, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 115-137).
  • Tsagourias N & White ND (2013) Private military and security companies, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 138-159).
  • Tsagourias N & White ND (2013) Military security, COLLECTIVE SECURITY: THEORY, LAW AND PRACTICE (pp. 247-277).
  • Tsagourias N (2012) The Application of the Principle of Subsidiarity to International Legislation with Reference to Security Council Counterterrorism Resolutions In Lindholm J & Derlen M (Ed.), Festskrift till P瓣r Hallstr繹m: volume in honor of Par Hallstrom (pp. 341-352).
  • Tsagourias N (2011) Non-state actors and the use of force In D'Aspremont J (Ed.), Participants in the International Legal System (pp. 326-341). Routledge
  • Tsagourias N (2011) , International Military Missions and International Law (pp. 245-265). Brill | Nijhoff
  • Tsagourias N (2011) Conceptualizing the Autonomy of the European Union In Collins R & White ND (Ed.), International Organizations and the Idea of Autonomy (pp. 339-353). Routledge
  • Tsagourias N (2011) The Responsibility of International Organisations for Military Missions In Odello M & Piotrowicz R (Ed.), International Military Missions and International Law (pp. 245-266). Martinus Nijhoff
  • Tsagourias N (2010) Cosmopolitan Legitimacy and UN Collective Security In Pierik R & Werner W (Ed.), Cosmopolitanism in Context (pp. 129-154). Cambridge University Press
  • Tsagourias N (2010) Command Responsibility and the Princile of Individual Criminal Responsibility: A Critical Analysis of International Jurisprudence In Eboe-Osuji C (Ed.), Protecting Humanity (pp. 817-838). Martinus Nijhoff
  • Tsagourias N (2007) The Constitutional Role of General Principles of Law in International and European Jurisprudence In Tsagourias N (Ed.), Transnational Constitutionalism (pp. 71-106). Cambridge University Press
  • Tsagourias N (2007) Constitutionalism: a theoretical roadmap In Tsagourias N (Ed.), Transnational Constitutionalism (pp. 1-13). Cambridge University Press
  • Tsagourias N (2007) EU Peacekeeping Operations: Legal and Theoretical Issues In Trybus M & White N (Ed.), European Security Law (pp. 102-133). Oxford University Press
  • Tsagourias N (2006) International Community, Recognition of States and Political Cloning In Warbrick C & Tierney S (Ed.), Towards an International Legal Community: The Sovereignty of States and the Sovereignty of International Law (pp. 211-240). British Inst of International & Comparative
  • Tsagourias N (2004) Irrational Governance: The Use of Force In Heere WP (Ed.), From Government to Governance: The Growing Impact of Non-State Actors on the International and European Legal System (pp. 472-478). Cambridge University Press
  • Tsagourias N (2004) , Governance and International Legal Theory (pp. 97-121). Springer Netherlands
  • Tsagourias N (2004) , Netherlands Yearbook of International Law (pp. 55-87). T.M.C. Asser Press
  • Tsagourias N (2004) The will of the international community as a normative source of international Law In Dekker IF & Werner WG (Ed.), Governance and International Legal Theory (pp. 99-124). Springer
  • Tsagourias N (2001) E.1 HUMANISM AND THE MANDATES SYSTEM: ITS MODERN REVIVAL, Hague Yearbook of International Law Annuaire De La Haye De Droit International (pp. 97-104).
  • Tsagourias N (2000) Humanism and the Mandates System: Its Modern Revival In Lammers (Ed.), Hague Yearbook of International Law (pp. 97-110). Martinus Nijhoff Publishers
  • () (pp. 145-146). Edward Elgar Publishing
  • Tsagourias N () , Beyond Responsibility to Protect (pp. 435-448). Intersentia
  • Tsagourias N () , The Oxford Handbook of the Use of Force in International Law (pp. 398-415). Oxford University Press
  • () (pp. 401-402). Edward Elgar Publishing
  • Tsagourias N () Oxford University Press
  • dAspremont J, Reisman WM & Noortmann M () In d'Aspremont J (Ed.) Routledge

Book reviews

  • Tsagourias N (2016) . AMERICAN JOURNAL OF INTERNATIONAL LAW, 110(3), 609-614.

Reports

  • Tsagourias N (2014) Violence Against Journalists And Crimes Against Humanity

Preprints

  • Tsagourias N & Biggio G () .
  • Tsagourias N () .
  • Tsagourias N () .
  • Tsagourias N () .
Research group

Areas of research supervision

  • International law and the use of force
  • International humanitarian law
  • International criminal law
  • Collective security law
  • Peacekeeping
  • International and European constitutionalism
  • Cybersecurity
Grants
Title/Description:Awarding Body:People Involved:Dates:Amount:
Collective Security: law, theory and practiceBritish AcademyProfessor Nicholas Tsagourias and Professor Nigel White (Nottingham)2010 - 2012瞿7,450
Teaching interests

My main objective is to guide students and facilitate them in developing their own intellectual potential. This is achieved through enquiry-based teaching and learning.

Teaching activities

The modules I teach are:

Postgraduate/MA

  • Principles of International Law
  • International Criminal Law
  • International Humanitarian Law
  • International Security Institutions and Law
  • Theoretial Foundattions of International Organisations
Professional activities and memberships
  • Editorial Board: Journal of Conflict and Security Law and Journam on the Use of Force and International Law
  • Member of the Use of Force Committee of the International Law Association
  • Member of the Institute of International Humanitarian Law (San Remo, Italy)
  • Member of the American Society of International Law
  • Member of the European Society of International Law
  • Member of the British Institute of International and Comparative Law
  • AHRC Peer Review College

Recent invited papers and keynote lectures

  • Gouvernance et r矇gulation de la soci矇t矇 num矇rique : quel r繫le pour chacun ? UNESCO
  • Self-Defence and Non-State Actors. Annual Meeting, European Society of International Law, Oslo
    State Responsibility for Cyber Operations: International Law Issues, BIICL
  • The jus ad bellum aspects of cyberwar, Defence Academy of the United Kingdom

Links

  Sheffield Centre for International and European Law