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Max Planck Encyclopedia of Public International Law [MPEPIL]

Ius cogens

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Content type:
Encyclopedia entries
Product:
Max Planck Encyclopedias of International Law [MPIL]

Module:
Max Planck Encyclopedia of Public International Law [MPEPIL]
Article last updated:
February 2024

From: Oxford Public International Law (http://opil.ouplaw.com). (c) Oxford University Press, 2023. All Rights Reserved.date: 22 January 2025

Subject(s):
Sources of international law — Erga omnes obligations — Peremptory norms / ius cogens

Published under the auspices of the Max Planck Institute for Comparative Public Law and International Law under the direction of Professor Anne Peters (2021–) and Professor Rüdiger Wolfrum (2004–2020). 

Editor’s Note: A different entry under the title ‘Ius cogens’, written in January 2009 by Jochen Abr. Frowein, appeared as part of the online Max Planck Encyclopedia of Public International Law until the publication of this entry in 2024. This new entry has been published at the same web address (URL) as the original entry. The original entry was also published in the 2012 print edition of the Encyclopedia (R Wolfrum (ed) The Max Planck Encyclopedia of Public International Law (OUP Oxford 2012) vol VI, 443–46). 1 Due to its potentially far-reaching effects, ius...
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