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Public international law

Members of Three Stone have expertise in public international law, including all aspects of state responsibility, the law of treaties, investment protection disputes (in particular, investor-State arbitrations), international human rights law, international environmental law questions of immunity and matters involving the law of the sea (including maritime delimitation).

As well as advising on questions of international law, some of our members accept instructions in relation to disputes before international courts and tribunals (including the International Court of Justice), as well as acting in cases before the domestic courts involving questions of public international law.

Notable Cases

Members have acted in a number of high profile disputes:

  • Certain Activities in the Border Area (Costa Rica v. Nicaragua); Construction of a Road in Costa Rica along the San Juan River (Nicaragua v. Costa Rica), Judgment of 16 December 2015 (International Court of Justice);
  • The “Arctic Sunrise” (Kingdom of the Netherlands v. Russian Federation), Provisional Measures, Order of 22 November 2013 (International Tribunal for the Law of the Sea); and Award on the Merits of 14 October 2015 (UNCLOS Annex VII Tribunal / PCA registry) (amicus curiae briefs submitted on behalf of Greenpeace International);
  • The Railway Land Arbitration (Malaysia/Singapore) (PCA Case MY-SG 70514), Award of 30 October 2014;
  • AES Corporation and Tau Power BV v. Republic of Kazakhstan (ICSID Case No. ARB/10/16), Award of 1 November 2013;
  • A dispute before the International Court of Justice involving claims of violation of sovereignty and territorial integrity, and breaches of international environmental and human rights law;
  • Maritime Delimitation in the Black Sea (Romania v. Ukraine), ICJ Reports 2009, 61
  • What the directories say
    • Simon Olleson is recommended as a Leading Junior (Band 3) for Public International Law in Chambers and Partners UK 2016 where he is described as having "a strong PIL practice spanning inter-state disputes, investment treaty arbitrations, Law of the Sea and state immunity issues", and as being "superb at getting things done in a timely way and good with demanding clients".Chambers & Partners UK 2016
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COVID-19

Three Stone have taken immediate measures to maintain our impressive chancery commercial services and our clerking team will provide their usual high standard of service whilst ensuring the safety of our clients, staff and members during this dynamic period.