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1. Any Party may propose an amendment to this Convention. The text of any such amendment and the reasons therefor shall be communicated to the Secretary-General, who shall communicate them to the Parties and to the Council. The Council may decide either:
a) that a conference shall be called in accordance with paragraph 4 of article 62 of the Charter of the United Nations to consider the proposed amendment; or
b) that the Parties shall be asked whether they accept the proposed amendment and also asked to submit to the Council any comments on the proposal.
2. If a proposed amendment circulated under paragraph 1 b) has not been rejected by any Party within eighteen months after it has been circulated, it shall thereupon enter into force. If however a proposed amendment is rejected by any Party, the Council may decide, in the light of comments received from Parties, whether a conference shall be called to consider such amendment.