The rules concerning the conclusion of treaties (Articles 6 to 25) equally apply for the amendment of treaties (Article 39). Because of the pronciple of
free consent, the States Parties are free to create specific norms for the amendment of their treaty or treaties. Such an agreement can be entered into
- either
implicitely - or
explicitly,
both orally or in written form (the
Vienna Convention, however, is only applicable for agreements concluded in written form). This agreement can authorize the amendment of the original treaty as well as it can prohibit or restrict amendments. Nevertheless, agreements concerning the amendment of treaties can also be subject to amendments themselves.
