Dr Maria Xiouri

Lecturer in Law

Maria Xiouri

Dr Maria Xiouri is a Lecturer in Law in the Department of Law and Finance at the University of Bedfordshire and a Research Fellow of the Centre for Research in Law (CRiL)

Her PhD thesis examined the relationship between responses to the breach of a treaty according to the law of treaties and the law of State responsibility.

Her research interests lie in the field of public international law and more specifically in the law of treaties, the law of State responsibility, international dispute settlement and the law of the sea.

She has been a Visiting Fellow at the Max Planck Institute for Comparative Public Law and International Law and she has completed internships with the International Law Commission and the British Institute of International and Comparative Law.

Other References


  • PhD in International Law - Queen Mary, University of London (2016)
  • LLM in Public International Law - National and Kapodistrian University of Athens (2012)
  • LLM in Public International Law - University of Cambridge (2010)
  • LLB - National and Kapodistrian University of Athens (2009)

Teaching Expertise

  • Public International Law (UG)
  • Law of Treaties (PG)
  • International Natural Resources Law (PG)
  • International Human Rights Law (UG)
  • EU Law (UG)
  • Immigration and Asylum Law (UG)
  • Contract Law (UG)
  • Company Law (UG)
  • Family Law (UG)

Research Interests

Public International Law with particular emphasis on:

  • Law of treaties
  • Law of State responsibility
  • International dispute settlement
  • Law of the sea
  • Refugee Law

External Roles

  • Member of the British Institute of International and Comparative law, the European Society of International Law, the American Society of International Law, the Hellenic Society of International Law and International Relations.
  • Advocate, Member of the Athens Bar Association (non-practising)


  • Xiouri M., The Breach of a Treaty: State Responses in International Law (Brill/Nijhoff, 2021).
  • ‘Some Remarks on the US Withdrawal from the INF Treaty’ (OpinioJuris, 24 October 2020), available at opiniojuris.org/2020/10/24/some-remarks-on-the-us-withdrawal-from-the-inf-treaty
  • Xiouri M., 'Material breach of a treaty: some remarks on the Partial Award of 30 June 2016 in the matter of an arbitration between Croatia and Slovenia' (2019) 8:1 Cambridge International Law Journal 131-146.
  • Xiouri M., ‘The exceptio non adimpleti contractus in public international law’ (2019) 21:1 International Community Law Review 56-92.
  • Xiouri M., ‘Towards the Acceptance of the Equidistance Rule in the Delimitation of the Continental Shelf and the Exclusive Economic Zone’ in P Pazartzis and M Gavouneli (eds.), Reconceptualising the Rule of Law in Global Governance, Resources, Investment and Trade (Hart Publishing 2016) 243-259.
  • Xiouri M., Book Review: Duncan B. Hollis (ed.), The Oxford Guide to Treaties (Oxford University Press 2012) 17 International Community Law Review (2015) 117-122.
  • Xiouri M., ‘Problems in the Relationship between the Termination or Suspension of a Treaty on the Ground of its Material Breach and Countermeasures’, (2015) 6 Queen Mary Law Journal 63-76.

Contact Details

T: +44 (0)1582 489734 (ext. 9734)
E: maria.xiouri@beds.ac.uk


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