Dr. Chosen Udorji

Chosen completed his LLB at the Ahmadu Bello University, Nigeria and following upon completing his BL at Nigerian Law School, Chosen was called to the Nigerian Bar as a Barrister and Solicitor of the Supreme Court of Nigeria. Chosen practiced in both capacities in criminal and civil litigation and general corporate law for some years before relocating to the United Kingdom to pursue his LLM at the University of Aberdeen, Scotland. While pursuing his LLM Chosen was offered internship opportunity at the United Nations Headquarters, New York, to work with the United Nations Security Council (Research Section of the Department of Political Affairs). Chosen eventually did not take on this internship role but decided to go on to pursue and obtain his PhD (Law) at the University of Sussex, England, UK. Chosen completed his PhD in 2021, which examined the scope of the law governing the use of indirect force under international law. During his PhD studies, Chosen taught (law and non-law subjects) at various universities -  particularly, as an Associate Tutor (2015 - 2018) at the University of Sussex and as a Lecturer (2016) at London South Bank University - and presented (his research papers) at various universities within and outside the UK, including Yale Law School, Connecticut, USA. Chosen recently presented a paper at the University of Palacky, Czech Republic, on his research. Chosen have also taken on various committee roles within the higher education and in non-governmental organizations.

Chosen is currently a Senior Teaching Fellow in Law and the Postgraduate Level Tutor at Portsmouth Law School, University of Portsmouth, United Kingdom. Chosen's research expertise broadly covers the international law governing the use of force, and with particular focus on the regulation of indirect force under international law.

 At Portsmouth Law School, Chosen convenes Public International law (UG), International Law and Armed Conflict (UG) Introduction to Law Course (PG), Advanced Legal Systems and Research Course (PG), and Courses.

Chosen’s recent publications include:

• Chosen Udorji, Indirect Force and International Law: The Legal Status of Proxy Wars (Routledge, 2026)
• Chosen Udorji, 'Reconceptualising the Meaning of Indirect Force and the Scope of its Regulation under International Law' (2025) 30(1) Journal of Conflict and Security Law, 47-77.