Article 26 — Pacta sunt servanda. See
Principles and Concepts of General Public International Law, Good
faith — Pacta sunt servanda (P.3.1)
Article 28 — Non-retroactivity of treaties.
and Concepts of General Public International Law, No retroactive
application of treaties (P.3.4); Temporal Application of Rights and
See Interpretation, General rules of treaty
interpretation — Article 31 of the Vienna Convention (I.3.1)
See Interpretation, Supplementary means of
interpretation — Article 32 of the Vienna Convention (I.3.10)
See Interpretion, Multiple authentic languages — Article 33 of the Vienna Convention (I.3.11)
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