An Expert Legal Analysis of Article XI of the Outer Space Treaty (Status and application of the five United Nations Treaties on Outer Space, and ways and means, including capacity building, to promote their implementation.
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Date
2026-04-15
Journal Title
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Publisher
United Nations Office for Outer Space Affairs.
Abstract
The International Institute of Space Law (IISL) is a non-governmental organization dedicated to promoting the rule of
law in outer space. IISL holds permanent observer status with the Committee on the Peaceful Uses of Outer Space (the
Committee) and has been supporting the work of the Committee’s Legal Subcommittee through various efforts,
including the organization of the Annual Space Law Symposium in collaboration with the European Center for Space Law
of the European Space Agency.
The purpose of this paper is to present an expert legal analysis of Article XI of the Outer Space Treaty (OST), particularly
focusing on current practices, gaps, ambiguities and barriers to the provision’s implementation, with a view to
supporting relevant discussions within the Committee’s Legal Subcommittee, including within the Working Group on the
Status and Application of the Five United Nations Treaties on Outer Space (WG TRE).
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Citation
United Nations Office for Outer Space Affairs.A/AC.105/C.2.2026/CRP.19.