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Max Planck Encyclopedia of Public International Law [MPEPIL]


Malgosia Fitzmaurice

From: Oxford Public International Law (http://opil.ouplaw.com). (c) Oxford University Press, 2015. All Rights Reserved.date: 05 July 2020

Continental shelf — UNCLOS (UN Convention on the Law of the Sea) — Customary international law — Lex specialis — Unilateral acts — Codification — Travaux préparatoires — Treaties, application — Treaties, interpretation — Treaties, entry into force — Treaties, ratification — Treaties, binding force — Treaties, invalidity, termination, suspension, withdrawal — Vienna Convention on the Law of Treaties — Treaties, reservations and declarations

Published under the auspices of the Max Planck Foundation for International Peace and the Rule of Law under the direction of Rüdiger Wolfrum.

1 International law relating to treaties has largely been codified in the Vienna Convention on the Law of Treaties (1969) (‘VCLT’). For the purposes of the VCLT, a ‘treaty’ is defined as ‘an international agreement concluded between States in written form and governed by international law, whether embodied in a single instrument or in two or more related instruments and whatever its particular designation’ (Art. 2(1)(a); see paras 16–19 below).2 The present article is principally concerned with the law of treaties within the confines of the VCLT, taking also into...
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