A/RES/55/283 publications and reports of mutual interest and for the furnishing of special reports and studies and information. 5. The Secretariat of the United Nations and the Technical Secretariat of OPCW shall maintain a close working relationship in accordance with such arrangements as may be agreed between the Secretary-General and the Director-General. Article III Coordination The United Nations and OPCW recognize the necessity of achieving, where applicable, effective coordination of the activities and services of OPCW and of the United Nations, and of avoiding unnecessary duplication of their activities and services. Article IV Reporting 1. The Director-General will keep the United Nations informed of the routine activities of OPCW, and will report on a regular basis, as appropriate and as duly mandated by the Executive Council, through the Secretary-General to the General Assembly and the Security Council. 2. If the Executive Council takes a decision to provide, pursuant to article X of the Convention, supplementary assistance to a State Party to the Convention requesting such assistance in connection with the use or threat of use of chemical weapons, the Director-General (representing OPCW, as specified in this Agreement) shall transmit to the Secretary-General (representing the United Nations, as specified in this Agreement) the above-mentioned decision of the Executive Council, together with the investigation report prepared by the Technical Secretariat in connection with the request for such assistance. 3. Whenever decisions are taken by the Conference of the States Parties, pursuant to article XII of the Convention, on measures, including collective measures recommended to States Parties, to ensure compliance with the Convention and to redress and remedy any situation which contravenes the provisions of the Convention, the Director-General, upon instructions from the Conference, shall inform the General Assembly and the Security Council accordingly, through the Secretary-General. 4. Should the Secretary-General report to the United Nations on the common activities of the United Nations and OPCW or on the development of relations between them, any such report shall be promptly transmitted by the SecretaryGeneral to OPCW. 5. Should the Director-General report to OPCW on the common activities of OPCW and the United Nations or on the development of relations between them, any such report shall be promptly transmitted by the Director-General to the United Nations. 4