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1. Any Party may propose an amendment to the present Convention by submitting it to the Secretary-General of the United Nations. The Secretary-General shall thereupon communicate the proposed amendment to the Parties to this Convention with a request that they indicate whether they favour a conference of Parties for the purpose of considering and voting upon the proposal. In the event that within four months from the date of such communication at least one third of the Parties favour such a conference, the Secretary-General shall convene the conference under the auspices of the United Nations.
2. The conference of Parties shall make every effort to achieve consensus on each amendment. If all efforts at consensus are exhausted and no consensus is reached, the amendment shall, as a last resort, require for its adoption a twothirds majority vote of the Parties present and voting at the conference.
3. An adopted amendment shall be submitted by the Secretary-General of the United Nations to all the Parties for ratification, acceptance or approval.
4. An adopted amendment enters into force six months after the date of deposit of the third instrument of ratification, acceptance or approval. When an amendment enters into force, it shall be binding on those Parties which have expressed consent to be bound by it.
5. When a State or a regional economic integration organization ratifies, accepts or approves an amendment that has already entered into force, the amendment enters into force in respect of that State or that regional economic integration organization six months after the date of the deposit of its instrument of ratification, acceptance or approval.
6. Any State or regional economic integration organization which becomes a Party to the Convention after the entry into force of the amendment shall be considered as a Party to the Convention as amended.