A/HRC/RES/17/18 2. If a State becomes a party to the present Protocol after its entry into force, the obligations of that State vis-à-vis the Committee shall relate only to violations of the rights set forth in the Convention and/or the first two Optional Protocols thereto occurring after the entry into force of the present Protocol for the State concerned. Article 21 Amendments 1. Any State party may propose an amendment to the present Protocol and submit it to the Secretary-General of the United Nations. The Secretary-General shall communicate any proposed amendments to States parties with a request to be notified whether they favour a meeting of States parties for the purpose of considering and deciding upon the proposals. In the event that, within four months of the date of such communication, at least one third of the States parties favour such a meeting, the Secretary-General shall convene the meeting under the auspices of the United Nations. Any amendment adopted by a majority of two thirds of the States parties present and voting shall be submitted by the Secretary-General to the General Assembly for approval and, thereafter, to all States parties for acceptance. 2. An amendment adopted and approved in accordance with paragraph 1 of the present article shall enter into force on the thirtieth day after the number of instruments of acceptance deposited reaches two thirds of the number of States parties at the date of adoption of the amendment. Thereafter, the amendment shall enter into force for any State party on the thirtieth day following the deposit of its own instrument of acceptance. An amendment shall be binding only on those States parties that have accepted it. Article 22 Denunciation 1. Any State party may denounce the present Protocol at any time by written notification to the Secretary-General of the United Nations. The denunciation shall take effect one year after the date of receipt of the notification by the Secretary-General. 2. Denunciation shall be without prejudice to the continued application of the provisions of the present Protocol to any communication submitted under articles 5 or 12 or any inquiry initiated under article 13 before the effective date of denunciation. Article 23 Depositary and notification by the Secretary-General 1. The Secretary-General of the United Nations shall be the depositary of the present Protocol. 2. The Secretary-General shall inform all States of: (a) Signatures, ratifications and accessions under the present Protocol; (b) The date of entry into force of the present Protocol and of any amendment thereto under article 21; (c) Any denunciation under article 22. 9