5. After the expiration of the period prescribed under paragraph 4 of this Article, the Secretary General shall submit the proposals and any comments thereon received from the Partner States to the Summit through the Council. 6. Any amendment to this Treaty shall be adopted by the Summit and shall enter into force when ratified by all the Partner States. ARTICLE 151 Annexes and Protocols to the Treaty 1. The Partner States shall conclude such Protocols as may be necessary in each area of co-operation which shall spell out the objectives and scope of, and institutional mechanisms for co-operation and integration. 2. Each Protocol shall be approved by the Summit on the recommendation of the Council. 3. Each Protocol shall be subject to signature and ratification by the parties hereto. 4. The Annexes and Protocols to this Treaty shall form an integral part of this Treaty. ARTICLE 152 Entry into Force This Treaty shall enter into force upon ratification and deposit of instruments of ratification with the Secretary General by all Partner States. ARTICLE 153 Depository and Registration 1. This Treaty and all instruments of ratification shall be deposited with the Secretary General who shall transmit certified true copies thereof to all the Partner States. 2. The Secretary General shall register this Treaty with the Organisation of African Unity, the United Nations, and such other organisations as the Council may determine. 116