United Nations Convention on the Law of Treaties
Signed at Vienna 23 May 1969, Entry into Force: 27 January 1980

[Preamble]

Part I - Introduction

Article 1 - Scope of the present Convention

Article 2 - Use of terms

Article 3 - International agreements not within the scope of the present Convention

Article 4 - Non-retroactivity of the present Convention

Article 5 - Treaties constituting international organizations and treaties adopted within an international organization

Part II - Conclusion and Entry into Force of Treaties

Section 1. - Conclusion of Treaties

Article 6 - Capacity of States to conclude treaties

Article 7 - Full powers

Article 8 - Subsequent confirmation of an act performed without authorization

Article 9 - Adoption of the text

Article 10 - Authentication of the text

Article 11 - Means of expressing consent to be bound by a treaty

Article 12 - Consent to be bound by a treaty expressed by signature

Article 13 - Consent to be bound by a treaty expressed by an exchange of instruments constituting a treaty

Article 14 - Consent to be bound by a treaty expressed by ratification, acceptance or approval

Article 15 - Consent to be bound by a treaty expressed by accession

Article 16 - Exchange or deposit of instruments of ratification, acceptance, approval or accession

Article 17 - Consent to be bound by part of a treaty and choice of differing provisions

Article 18 - Obligation not to defeat the object and purpose of a treaty prior to its entry into force

Section 2. - Reservations

Article 19 - Formulation of reservations

Article 20 - Acceptance of and objection to reservations

Article 21 - Legal effects of reservations and of objections to reservations

Article 22 - Withdrawal of reservations and of objections to reservations

Article 23 - Procedure regarding reservations

Section 3. - Entry Into Force and Provisional Application of Treaties

Article 24 - Entry into force

Article 25 - Provisional application

Part III - Observance, Application and Interpretation of Treaties

Section 1. - Observance of Treaties

Article 26 - Pacta sunt servanda

Article 27 - Internal law and observance of treaties

Section 2. - Application of Treaties

Article 28 - Non-retroactivity of treaties

Article 29 - Territorial scope of treaties

Article 30 - Application of successive treaties relating to the same subject-matter

Section 3. - Interpretation of Treaties

Article 31 - General rule of interpretation

Article 32 - Supplementary means of interpretation

Article 33 - Interpretation of treaties authenticated in two or more languages

Section 4. - Treaties and Third States

Article 34 - General rule regarding third States

Article 35 - Treaties providing for obligations for third States

Article 36 - Treaties providing for rights for third States

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

Article 45 - Loss of a right to invoke a ground for invalidating, terminating, withdrawing from or suspending the operation of a treaty

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 48 - Error

Article 49 - Fraud

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 54 - Termination of or withdrawal from a treaty under its provisions or by consent of the parties

Article 55 - Reduction of the parties to a multilateral treaty below the number necessary for its entry into force

Article 56 - Denunciation of or withdrawal from a treaty containing no provision regarding termination, denunciation or withdrawal

Article 57 - Suspension of the operation of a treaty under its provisions or by consent of the parties

Article 58 - Suspension of the operation of a multilateral treaty by agreement between certain of the parties only

Article 59 - Termination or suspension of the operation of a treaty implied by conclusion of a later treaty

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)

Section 4. - Procedure

Article 65 - Procedure to be followed with respect to invalidity, termination, withdrawal from or suspension of the operation of a treaty

Article 66 - Procedures for judicial settlement, arbitration and conciliation

Article 67 - Instruments for declaring invalid, terminating, withdrawing from or suspending the operation of a treaty

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 71 - Consequences of the invalidity of a treaty which conflicts with a peremptory norm of general international law

Article 72 - Consequences of the suspension of the operation of a treaty

Part VI - Miscellaneous Provisions

Article 73 - Cases of State succession, State responsibility and outbreak of hostilities

Article 74 - Diplomatic and consular relations and the conclusion of treaties

Article 75 - Case of an aggressor State

Part VII - Depositaries, Notifications, Corrections and Registration

Article 76 - Depositaries of treaties

Article 77 - Functions of depositaries

Article 78 - Notifications and communications

Article 79 - Correction of errors in texts or in certified copies of treaties

Article 80 - Registration and publication of treaties

Part VIII - Final Provisions

Article 81 - Signature

Article 82 - Ratification

Article 83 - Accession

Article 84 - Entry into force

Article 85 - Authentic texts

[Post Provisions]

[Post Clauses (If any: Signed; Witnessed; Done; Authentic Texts; & Deposited Clauses)]

ANNEX

[ANNEX]

Metadata

SiSU Metadata, document information

Manifest

SiSU Manifest, alternative outputs etc.