Nobuo Hayashi


Nobuo Hayashi
Nobuo Hayashi left PRIO in 2012. The information on this page is kept for historical reasons.



2006-2008: Legal Advisor at the Norwegian Centre for Human Rights, University of Oslo Law Faculty

(2004-2006): Legal Officer in the Prosecutions Division, Office of the Prosecutor (OTP), International Criminal Tribunal for the Former Yugoslavia (ICTY)

2000-2003: Associate Legal Officer in the ICTY OTP Legal Advisory Section



  • B.Sc. in Foreign Service in international relations, law and organisation from Georgetown University (1995)
  • Diplôme d'études supérieures, an M.Phil. equivalent, in international law from the Institut universitaire de hautes études internationales (HEI) in Geneva (1998)
  • LL.M. from the University of Cambridge (1999)
  • Enrolled in the post-graduate School of International and Public Affairs at Columbia University (1995-1996)
  • Hague Academy of International Law (1999)
  • Doctoral programme at HEI (1998-2004).


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All Publications

Peer-reviewed Journal Article

Hayashi, Nobuo (2010) Requirements of Military Necessity in International Humanitarian Law and International Criminal Law, Boston University International Law Journal 28(1): 39–140.
Hayashi, Nobuo (2006) The Role of Judges in Identifying the Status of Combatants, Acta Societatis Martensis 2: 69–92.

Book Chapter

Hayashi, Nobuo (2010) Continuous Attack Liability Without Right or Fact of Direct Participation in Hostilities – The ICRC Interpretative Guidance and Perils of a Pseudo-Status, in Międzynarodowe prawo humanitarne. Poland: Wydawnictwo Wyższej Szkoły Oficerskiej Sił Powietrznych (56–79).
Hayashi, Nobuo (2010) Continuous Attack Liability without Right or Fact of Direct Participation in Hostilities - The ICRC Interpretive Guidance and Perils of a Pseudo-Status, in International Humanitarian Law – Antecedents and Challenges of the Present Time. Bydgoszcz, Poland: .

Non-refereed Journal Article

Hayashi, Nobuo (2013) Military Necessity as Normative Indifference, Georgetown Journal of International Law 44(2): 675–782.

Book Review

Hayashi, Nobuo (2009) Review of War Crimes in Internal Armed Conflicts, in Nordic Journal of Human Rights Nordisk Tidsskrift for Menneskerettigheter 27(3): 357–365.