Article 431. Interpretation of a treaty

In interpreting the terms of a treaty, the court shall take into account the literal meaning of the words and expressions contained therein. If the rules contained in part one of this article do not permit the determination of the content of the contract, the validity of the contract must be clarified. the common will of the parties, taking into account the purpose of the treaty, taking into account all relevant circumstances, including pre-contract negotiations and correspondence, practices established under the treaty Aimate relations of the parties, customs, subsequent conduct of the parties.