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1. After the present Convention has been in force for three years, any Contracting Party may, by notification to the Secretary-General of the United Nations, request that a conference be convened for the purpose of reviewing the present Convention. The Secretary-General shall notify all Contracting Parties of the request and a review conference shall be convened by the Secretary-General if, within a period of four months from the date of the notification by the Secretary-General, not less than one-third of the Contracting Parties signify their assent to the request.
2. If a conference is convened in accordance with the preceding paragraph, the Secretary-General shall notify all the Contracting Parties and invite them to submit, within a period of three months, such proposals as they wish the conference to consider. The Secretary-General shall circulate to all Contracting Parties the provisional agenda for the conference, together with the text of such proposals, at least three months before the date on which the conference is to meet.
3. The Secretary-General shall invite to any conference convened in accordance with this article all the countries referred to in article 6, paragraph 1, of the present Convention and countries which have become Contracting Parties under the said article 6, paragraph 2.