i) does not affect the enjoyment by the other parties of their rights under

the treaty or the performance of their obligations;

ii) does not relate to a provision, derogation from which is incompatible

with the effective execution of the object and purpose of the treaty as

a whole.

2. Unless in a case falling under paragraph 1 (a) the treaty otherwise provides, the parties

in question shall notify the other parties of their intention to conclude the agreement

and of the modification to the treaty for which it provides.

PART V

INVALIDITY, TERMINATION AND SUSPENSION OF THE OPERATION OF

TREATIES

SECTION 1. GENERAL PROVISIONS

Article 42

Validity and continuance in force of treaties

1. The validity of a treaty ar of the consent of a State ar an intemational organization to

be bound by a treaty may be impeached only through the application of the present

Convention.

2. The termination of a treaty, its denunciation ar the withdrawal of a party, may take

place only as a result ofthe application ofthe provisions ofthe treaty ar ofthe present

Convention. The sarne rule applies to suspension of the operation of a treaty.

Article 43

Obligations imposed by international law independently of a treaty

The invalidity, termination ar denunciation of a treaty, the withdrawal of a party from it,

ar the suspension of its operation, as a result of the application of the present Convention

ar of the provisions of the treaty, shall not in any way impair the duty of any State ar of

any intemational organization to fulfil any obligation embodied in the treaty to which that

State ar that organization would be subject under intemational law independently of the

treaty.

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