to review generally the inventories carried out by Contracting Parties and competent international organizations on the state of marine pollution and its effects in the Mediterranean Sea area; (ii) to consider reports submitted by the Contracting Parties under Article 20; (iii) to adopt, review and amend as required the Annexes to this Convention and to the Protocols, in accordance with the procedure established in Article 17; (iv) to make recommendations regarding the adoption of any Additional Protocols or any amendments to this Convention or the Protocols in accordance with the provisions of Articles 15 and 16; (v) to establish working groups as required to consider any matters related to this Convention and the Protocols and Annexes; (vi) to consider and undertake any additional action that may be required for the achievement of the purposes of this Convention and the Protocols. Article 15 Adoption of Additional Protocols 1. The Contracting Parties, at a diplomatic conference, may adopt Additional Protocols to this Convention pursuant to paragraph 2 of Article 4. 2. A diplomatic conference for the purpose of adopting Additional Protocols shall be convened by the Organization at the request of two thirds of the Contracting Parties. 3. Pending the entry into force of this Convention the Organization may, after consulting with the signatories to this Convention, convene a diplomatic conference for the purpose of adopting Additional Protocols. Article 16 Amendment of the Convention or Protocols 1. Any Contracting Party to this Convention may propose amendments to the Convention. Amendments shall be adopted by a diplomatic conference which shall be convened by the Organization at the request of two thirds of the Contracting Parties. 2. Any Contracting Party to this Convention may propose amendments to any Protocol. Such amendments shall be adopted by a diplomatic conference which shall be convened by the Organization at the request of two thirds of the Contracting Parties to the Protocol concerned. 3. Amendments to this Convention shall be adopted by a three-fourths majority vote of the Contracting Parties to the Convention which are represented at the diplomatic conference and shall be submitted by the Depositary for acceptance by all Contracting Parties to the Convention. Amendments to any Protocol shall be adopted by a three-fourths majority vote of the Contracting Parties to such Protocol which are represented at the diplomatic conference and shall be submitted by the Depositary for acceptance by all Contracting Parties to such Protocol. 4. Acceptance of amendments shall be notified to the Depositary in writing. Amendments adopted in accordance with paragraph 3 of this Article shall enter into force between Contracting Parties having accepted such amendments on the 30th day following the receipt by the Depositary of notification of their acceptance by at least three-fourths of the Contracting Parties to this Convention or to the Protocol concerned, as the case may be. 5. After the entry into force of an amendment to this Convention or to a Protocol, any new Contracting Party to this Convention or such Protocol shall become a Contracting Party to the instrument as amended. Article 17 Annexes and amendments to Annexes 1. Annexes to this Convention or to any Protocol shall form an integral part of the Convention or such Protocol, as the case may be. 2. Except as may be otherwise provided in any Protocol, the following procedure shall apply to the adoption and entry into force of any amendments to Annexes to this Convention or to any Protocol, with the exception of amendments to the Annex on Arbritation:(i) any Contracting Party may propose amendments to the Annexes to this Convention or to any Protocols and the meetings referred to in Article 14; (ii) such amendments shall be adopted by a three-fourths majority vote of the Contracting Parties to the instrument in question; (iii) the Depositary shall without delay communicate the amendments so adopted to all Contracting Parties; (iv) any Contracting Party that is unable to approve an amendment to the Annexes to this Convention or to any Protocol shall so notify in writing the Depositary within a period determined by the Contracting Parties concerned when adopting the amendment; (v) the Depositary shall without delay notify all Contracting Parties of any notification received pursuant to the preceding subparagraph; (vi) on expiry of the period referred to in subparagraph (iv) above, the amendment to the Annex shall become effective for all Contracting Parties to this Convention or to the Protocol concerned which have not submitted a notification in accordance with the provisions of that subparagraph. 3. The adoption and entry into force of a new Annex to this Convention or to any Protocol shall be subject to the same procedure as for the adoption and entry into force of an amendment to an Annex in accordance with the provisions of paragraph 2 of this Article, provided that, if any amendment to the Convention or the Protocol concerned is involved, the new Annex shall not enter into force until such time as the amendment to the Convention or the Protocol concerned enters into force. 4. Amendments to the Annex on Arbritation shall be considered to be amendments to this Convention and shall be proposed and adopted in accordance with the procedures