International tribunals — International Tribunal for the Law of the Sea (“ITLOS”) — Constitution of a Special Chamber — Article 15, paragraph 2, of the Statute of the ITLOS, 1982

International tribunals — Jurisdiction — Preliminary objections to the jurisdiction of the Special Chamber — Article 294 of United Nations Convention on the Law of the Sea, 1982 (“UNCLOS”) — Indispensable third party — Competence over the interpretation or application of UNCLOS — Paragraph 1 of Article 288 of UNCLOS — Sovereignty over the Chagos Archipelago — Chagos Arbitral Award of 18 March 2015 under Annex VII of UNCLOS — ICJ’s Chagos Advisory Opinion of 25 February 2019 — Legal effects of determinations found in non-binding advisory opinions — United Nations General Assembly Resolution 73/295 of 22 May 2019 — Determination of the coastal State in application of Articles 74 and 83 of UNCLOS — Obligation to negotiate under Articles 74 and 83 of UNCLOS — Notion of dispute — Existence of a dispute between the Parties

International tribunals — Admissibility — Preliminary objection to the admissibility of the claim — Article 294 of United Nations Convention on the Law of the Sea, 1982 — Abuse of process