Law-ref.org Vienna Convention on the Law of Treaties
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ARTICLE-2: Use of terms     [go to this ARTICLE]
... (a) “treaty” means an international agreement concluded between States in written form and governed by international law, whether embodied in a single instrument or in two or more related instruments and whatever its particular designation; ...
... (a) “treaty” means an international agreement concluded between States in written form and governed by international law, whether embodied in a single instrument or in two or more related instruments and whatever its particular designation; ...


ARTICLE-5: Treaties constituting international organizations and treaties adopted within an international organization     [go to this ARTICLE]
... The present Convention applies to any treaty which is the constituent instrument of an international organization and to any treaty adopted within an international organization without prejudice to any relevant rules of the organization. ...


ARTICLE-11: Means of expressing consent to be bound by a treaty     [go to this ARTICLE]
... The consent of a State to be bound by a treaty may be expressed by signature, exchange of instruments constituting a treaty, ratification, acceptance, approval or accession, or by any other means if so agreed. ...


ARTICLE-13: Consent to be bound by a treaty expressed by an exchange of instruments constituting a treaty     [go to this ARTICLE]
... Consent to be bound by a treaty expressed by an exchange of instruments constituting a treaty ...
... The consent of States to be bound by a treaty constituted by instruments exchanged between them is expressed by that exchange when: ...
... (a) the instruments provide that their exchange shall have that effect; or ...
... (b) it is otherwise established that those States were agreed that the exchange of instruments should have that effect. ...


ARTICLE-16: Exchange or deposit of instruments of ratification, acceptance, approval or accession     [go to this ARTICLE]
... Exchange or deposit of instruments of ratification, acceptance, approval or accession ...
... Unless the treaty otherwise provides, instruments of ratification, acceptance, approval or accession establish the consent of a State to be bound by a treaty upon: ...


ARTICLE-18: Obligation not to defeat the object and purpose of a treaty prior to its entry into force     [go to this ARTICLE]
... (a) it has signed the treaty or has exchanged instruments constituting the treaty subject to ratification, acceptance or approval, until it shall have made its intention clear not to become a party to the treaty; or ...


ARTICLE-20: Acceptance of and objection to reservations     [go to this ARTICLE]
... 3. When a treaty is a constituent instrument of an international organization and unless it otherwise provides, a reservation requires the acceptance of the competent organ of that organization. ...


ARTICLE-31: General rule of interpretation     [go to this ARTICLE]
... (b) any instrument which was made by one or more parties in connection with the conclusion of the treaty and accepted by the other parties as an instrument related to the treaty. ...
... (b) any instrument which was made by one or more parties in connection with the conclusion of the treaty and accepted by the other parties as an instrument related to the treaty. ...


ARTICLE-67: Instruments for declaring invalid, terminating, withdrawing from or suspending the operation of a treaty     [go to this ARTICLE]
... Instruments for declaring invalid, terminating, withdrawing from or suspending the operation of a treaty ...
... 2. Any act declaring invalid, terminating, withdrawing from or suspending the operation of a treaty pursuant to the provisions of the treaty or of paragraphs 2 or 3 of article 65 shall be carried out through an instrument communicated to the other parties. If the instrument is not signed by the Head of State, Head of Government or Minister for Foreign Affairs, the representative of the State communicating it may be called upon to produce full powers. ...
... 2. Any act declaring invalid, terminating, withdrawing from or suspending the operation of a treaty pursuant to the provisions of the treaty or of paragraphs 2 or 3 of article 65 shall be carried out through an instrument communicated to the other parties. If the instrument is not signed by the Head of State, Head of Government or Minister for Foreign Affairs, the representative of the State communicating it may be called upon to produce full powers. ...


ARTICLE-68: Revocation of notifications and instruments provided for in articles 65 and 67     [go to this ARTICLE]
... Revocation of notifications and instruments provided for in articles 65 and 67 ...
... A notification or instrument provided for in articles 65 or 67 may be revoked at any time before it takes effect. ...


ARTICLE-77: Functions of depositaries     [go to this ARTICLE]
... (c) receiving any signatures to the treaty and receiving and keeping custody of any instruments, notifications and communications relating to it; ...
... (d) examining whether the signature or any instrument, notification or communication relating to the treaty is in due and proper form and, if need be, bringing the matter to the attention of the State in question; ...
... (f) informing the States entitled to become parties to the treaty when the number of signatures or of instruments of ratification, acceptance, approval or accession required for the entry into force of the treaty has been received or deposited; ...


ARTICLE-79: Correction of errors in texts or in certified copies of treaties     [go to this ARTICLE]
... (b) by executing or exchanging an instrument or instruments setting out the correction which it has been agreed to make; or ...
... (b) by executing or exchanging an instrument or instruments setting out the correction which it has been agreed to make; or ...


ARTICLE-82: Ratification     [go to this ARTICLE]
... The present Convention is subject to ratification. The instruments of ratification shall be deposited with the Secretary-General of the United Nations. ...


ARTICLE-83: Accession     [go to this ARTICLE]
... The present Convention shall remain open for accession by any State belonging to any of the categories mentioned in article 81. The instruments of accession shall be deposited with the Secretary-General of the United Nations. ...


ARTICLE-84: Entry into force     [go to this ARTICLE]
... 1. The present Convention shall enter into force on the thirtieth day following the date of deposit of the thirty-fifth instrument of ratification or accession. ...
... 2. For each State ratifying or acceding to the Convention after the deposit of the thirty-fifth instrument of ratification or accession, the Convention shall enter into force on the thirtieth day after deposit by such State of its instrument of ratification or accession. ...
... 2. For each State ratifying or acceding to the Convention after the deposit of the thirty-fifth instrument of ratification or accession, the Convention shall enter into force on the thirtieth day after deposit by such State of its instrument of ratification or accession. ...