Vienna Convention on the Law of Treaties. Various Authors
Article 37—Revocation or modification of obligations or rights of third States
Article 38—Rules in a treaty becoming binding on third States through international custom
PART IV—AMENDMENT AND MODIFICATION OF TREATIES
Article 39—General rule regarding the amendment of treaties
Article 40—Amendment of multilateral treaties
Article 41—Agreements to modify multilateral treaties between certain of the parties only
PART V—INVALIDITY, TERMINATION AND SUSPENSION OF THE OPERATION OF TREATIES
SECTION 1. GENERAL PROVISIONS
Article 42—Validity and continuance in force of treaties
Article 43—Obligations imposed by international law independently of a treaty
Article 44—Separability of treaty provisions
SECTION 2. INVALIDITY OF TREATIES
Article 46—Provisions of internal law regarding competence to conclude treaties
Article 47—Specific restrictions on authority to express the consent of a State
Article 50—Corruption of a representative of a State
Article 51—Coercion of a representative of a State
Article 52—Coercion of a State by the threat or use of force
Article 53—Treaties conflicting with a peremptory norm of general international law (jus cogens)
SECTION 3. TERMINATION AND SUSPENSION OF THE OPERATION OF TREATIES
Article 57—Suspension of the operation of a treaty under its provisions or by consent of the parties
Article 60—Termination or suspension of the operation of a treaty as a consequence of its breach
Article 61—Supervening impossibility of performance
Article 62—Fundamental change of circumstances
Article 63—Severance of diplomatic or consular relations
Article 64—Emergence of a new peremptory norm of general international law (jus cogens)
Article 66—Procedures for judicial settlement, arbitration and conciliation
Article 68—Revocation of notifications and instruments provided for in articles 65 and 67
SECTION 5. CONSEQUENCES OF THE INVALIDITY, TERMINATION OR SUSPENSION OF THE OPERATION OF A TREATY
Article 69—Consequences of the invalidity of a treaty
Article 70—Consequences of the termination of a treaty
Article 72—Consequences of the suspension of the operation of a treaty
PART VI—MISCELLANEOUS PROVISIONS
Article 73—Cases of State succession, State responsibility