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Nobuo Hayashi

Senior Legal Advisor

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Nobuo Hayashi specialises in the law of armed conflict, particularly the fundamental principles, conduct of hostilities and protection of victims; international criminal law, especially war crimes and modes of liability including command/superior responsibility; and public international law, in particular recourse to force and state responsibility. His most significant works cover military necessity, threat of force, and the law and ethics of nuclear weapons. He brings with him more than fifteen years of experience performing advanced research, advising international prosecutors, authoring court submissions, teaching at universities and publishing scholarly articles in the aforementioned areas as well as other related fields.

Major Positions: Visiting Lecturer, UN Interregional Crime and Justice Research Institute (2007-present); Researcher, PluriCourts, University of Oslo Law Faculty (2012-2016); Visiting Professor, International University of Japan (2005-2015); Researcher, Peace Research Institute Oslo (2008-12); Legal Advisor, Norwegian Centre for Human Rights (2006-8); Legal Officer, Prosecutions Division, Office of the Prosecutor (OTP), International Criminal Tribunal for the Former Yugoslavia (ICTY) (2004-6); and Associate Legal Officer, ICTY OTP Legal Advisory Section (2000-3).

Degrees: B.Sc. Foreign Service in international relations, law and organisation from Georgetown University (1995); Diplôme d’études supérieures in international law, Graduate Institute of International and Development Studies, Geneva (1998); and LL.M., University of Cambridge (1999). Additionally, he attended the post-graduate School of International and Public Affairs at Columbia University (1995-6), The Hague Academy of International Law (1999) and the doctoral programme at the Graduate Institute (1998-2004). His working language is English. He also speaks Japanese (native) and French (intermediate).





Focus Areas

  • Public international law
  • IHL
  • International criminal law
  • Peace research

Countries & Regions

  • Former Yugoslavian countries


  • English
  • Japanese
  • French
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ILPI has closed down. The information on this page is kept for historical reasons more information

ILPI has closed down. The information on this page is kept for historical reasons