Dr. Omri Sender

Partner

Dr. Omri Sender, Chair of the Public International Law Practice Group at S. Horowitz & Co., acts as counsel and adviser to States, international organizations, and multinational corporations on matters spanning the full spectrum of public international law. These encompass treaty obligations, territorial and maritime boundary delimitation, State and diplomatic immunities, the law of the sea, international investment law, international criminal law, sanctions and compliance, the law of international organizations, and State responsibility. His deep understanding of how international law is made and applied has earned him widespread recognition as a leading expert and practitioner in the field.

Omri has particular expertise in international dispute settlement proceedings, including before the International Court of Justice (ICJ), the International Tribunal for the Law of the Sea (ITLOS), United Nations treaty bodies, and arbitral tribunals constituted under the auspices of the International Centre for Settlement of Investment Disputes (ICSID).

Omri previously served as Counsel at the World Bank, as Law Clerk to the Chief Justice of the Supreme Court of Israel, and as Legal Assistant at the United Nations International Law Commission. He is the author of numerous publications in international law, including the monographs International law-making by the International Court of Justice and International Law Commission: Partnership for Purpose in a Decentralized Legal Order (Cambridge University Press 2024) and Identification of Customary International Law (Oxford University Press 2024, co-authored with Sir Michael Wood KC). He is also an adjunct professor at the Reichman University (where he teaches the advanced course “International Law in Practice”) and a much sought-after speaker in multiple forums.

Core Capabilities

  • International obligations, including those arising from treaties
  • Sovereign privileges and immunities
  • Territorial and maritime boundary delimitation
  • International investment protection
  • Sanctions, compliance, and anti-corruption
  • Human rights
  • International institutional law
  • International criminal law

 

Notable Representations

  • Counsel for Ecuador in Embassy of Mexico in Quito (Mexico v. Ecuador)
  • Counsel for Ecuador in Glas Espinel (Ecuador v. Mexico)
  • Counsel for Equatorial Guinea in Request relating to the Return of Property Confiscated in Criminal Proceedings (Equatorial Guinea v.  France)
  • Counsel for Israel in Application of the Convention on the Prevention and Punishment of the Crime of Genocide in the Gaza Strip (South Africa v. Israel)
  • Counsel for an Asian State in Request for an Advisory Opinion submitted by the Commission of Small Island States on Climate Change and International Law (ITLOS advisory proceedings)
  • Counsel for Ecuador in Obligations of States in respect of Climate Change (advisory proceedings)
  • Counsel for Equatorial Guinea in Immunities and Criminal Proceedings (Equatorial Guinea v. France)
  • Counsel for Israel in Legal Consequences of the Separation of the Chagos Archipelago from Mauritius in 1965 (advisory proceedings)
  • Counsel to the International Bank for Reconstruction and Development (World Bank) in relation to immunity from domestic civil jurisdiction
  • Expert advice in domestic proceedings concerning jurisdictional immunities of holders of high-ranking office in a foreign State
  • Counsel to an international (inter-governmental) organization in relation to an international waterway dispute between neighbouring States
  • Counsel to a State in proceedings instituted before the United Nations Committee on the Elimination of Racial Discrimination
  • Counsel to a State in relation to post-war reparation claims
  • Advice to the World Trade Organization
  • Counsel to a pharmaceutical corporation (Fortune 500 company) in relation to allegations concerning violations of human rights obligations
  • Counsel to a State in relation to sovereignty over territory
  • Counsel to a State in relation to a preliminary examination opened by the prosecutor of the International Criminal Court
  • Counsel to a State in relation to maritime delimitation with a neighbouring State
  • Assistant to the Arbitral Tribunal (by appointment of the parties) in Sapec, S.A. v. Kingdom of Spain, ICSID Case No. ARB/19/23
  • Assistant to the Arbitral Tribunal (by appointment of the parties) in European Solar Farms A/S v. Kingdom of Spain, ICSID Case No. ARB/18/45

Education

George Washington University, SJD (2020)

New York University, LL.M. (2012)

Tel Aviv University, LL.B. (2008), LL.M. (2009)

Admission

Israel Bar, 2010

Contact

Expertise

Languages

Hebrew, English, French

Dr. Omri Sender

Contact

Expertise

Languages

Hebrew, English, French

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Our Partner Dr. Omri Sender, Head of the Public International Law Practice Group at S. Horowitz & Co.

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