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Part III Observance and Application of Treaties, 11 Consistency among Treaty Obligations

Benedetto Conforti

From: The Law of Treaties Beyond the Vienna Convention

Edited By: Enzo Cannizzaro

From: Oxford Public International Law (http://opil.ouplaw.com). (c) Oxford University Press, 2023. All Rights Reserved.date: 25 September 2023

UN Charter — Vienna Convention on the Law of Treaties

International law regime of conflicts between treaties is obtained by combining the principles of the succession of treaties over time (the later treaty abrogates the earlier one) and the principle concerning the effects of treaties on third-party States (Pacta tertiis neque nocent neque prosunt). In fact, conflicts between treaties are not frequent as states prefer to negotiate in order to avoid them. Most of the time, negotiations lead to the inclusion in a treaty of declarations of ‘compatibility’ or ‘subordination’ with another or a series of other treaties. Some of them are analysed in this chapter.

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