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1. Any Contracting Party may propose one or more amendments to the present Convention. The text of any proposed amendment shall be communicated to the Secretary-General of the United Nations, who shall communicate it to all Contracting Parties and inform all the other countries referred to in article 6, paragraph 1, of this Convention.
2. Within a period of six months from the date on which the proposed amendment is communicated by the Secretary-General, any Contracting Party may inform the Secretary-General -
(a) that it has an objection to the amendment proposed, or
(b) that, although it intends to accept the proposal, the conditions necessary for such acceptance are not yet fulfilled in its country.
3. If a Contracting Party sends the Secretary-General a communication such as is provided for in paragraph 2 (b), it may, so long as it has not notified the Secretary-General of its acceptance of the proposed amendment, submit an objection to the proposed amendment within a period of 9 months following the expiry of the six-month period from its initial communication.
4. If an objection to the proposed amendment is stated in accordance with the terms of paragraphs 2 and 3 of this article, the amendment shall be deemed not to have been accepted and shall be of no effect.
5. If no objection to the proposed amendment in accordance with paragraphs 2 and 3 of the present article has been stated, the amendment shall be deemed to have been accepted as from the date specified below:
(a) if no Contracting Party has sent a communication to the Secretary-General in accordance with paragraph 2 (b) of this article, on the expiry of the period of six months referred to in that paragraph;
(b) if any Contracting Party has sent a communication to the Secretary-General in accordance with paragraph 2 (b) of this article, on the earlier of the following two dates: - the date by which all the Contracting Parties which sent such communications have notified the Secretary-General of their acceptance of the proposal, subject to the proviso that, if all the acceptances were notified before the expiry of the period of six months referred to in paragraph 2, this date shall be taken to be the date of expiry of the said six-month period;
- the date of expiry of the nine-month period referred to in paragraph 3 of this article.
- the date by which all the Contracting Parties which sent such communications have notified the Secretary-General of their acceptance of the proposal, subject to the proviso that, if all the acceptances were notified before the expiry of the period of six months referred to in paragraph 2, this date shall be taken to be the date of expiry of the said six-month period;
- the date of expiry of the nine-month period referred to in paragraph 3 of this article.
6. Any amendment deemed to be accepted shall enter into force six months after the date on which it was deemed to be accepted.
7. The Secretary-General shall, as soon as possible, notify all Contracting Parties whether an objection to the proposed amendment has been stated in accordance with paragraph 2 (a) of this article and whether one or more Contracting Parties have sent him a communication in accordance with paragraph 2 (b) of this article. If one or more Contracting Parties have sent him such a communication, he shall subsequently inform all the Contracting Parties whether the Contracting Party or Parties which have sent such a communication raise an objection to the proposed amendment or accept it.