19 to take steps aimed at coordinating the multiple reporting requirements and guidelines for preparing State reports under the respective human rights conventions and study the suggestion that the submission of one overall report on treaty obligations undertaken by each State would make these procedures more effective and increase their impact. 88. The World Conference on Human Rights recommends that the States parties to international human rights instruments, the General Assembly and the Economic and Social Council should consider studying the existing human rights treaty bodies and the various thematic mechanisms and procedures with a view to promoting greater efficiency and effectiveness through better coordination of the various bodies, mechanisms and procedures, taking into account the need to avoid unnecessary duplication and overlapping of their mandates and tasks. 89. The World Conference on Human Rights recommends continued work on the improvement of the functioning, including the monitoring tasks, of the treaty bodies, taking into account multiple proposals made in this respect, in particular those made by the treaty bodies themselves and by the meetings of the chairpersons of the treaty bodies. The comprehensive national approach taken by the Committee on the Rights of the Child should also be encouraged. 90. The World Conference on Human Rights recommends that States parties to human rights treaties consider accepting all the available optional communication procedures. 91. The World Conference on Human Rights views with concern the issue of impunity of perpetrators of human rights violations, and supports the efforts of the Commission on Human Rights and the SubCommission on Prevention of Discrimination and Protection of Minorities to examine all aspects of the issue. 92. The World Conference on Human Rights recommends that the Commission on Human Rights examine the possibility for better implementation of existing human rights instruments at the international and regional levels and encourages the International Law Commission to continue its work on an international criminal court. 93. The World Conference on Human Rights appeals to States which have not yet done so to accede to the Geneva Conventions of 12 August 1949 and the Protocols thereto, and to take all appropriate national measures, including legislative ones, for their full implementation. 94. The World Conference on Human Rights recommends the speedy completion and adoption of the draft declaration on the right and responsibility of individuals, groups and organs of society to promote and protect universally recognized human rights and fundamental freedoms. 95. The World Conference on Human Rights underlines the importance of preserving and strengthening the system of special procedures, rapporteurs, representatives, experts and working groups of the Commission on Human Rights and the Sub-Commission on the Prevention of Discrimination and Protection of Minorities, in order to enable them to carry out their mandates in all countries throughout the world, providing them with the necessary human and financial resources. The procedures and mechanisms should be enabled to harmonize and rationalize their work through periodic meetings. All States are asked to cooperate fully with these procedures and mechanisms. 96. The World Conference on Human Rights recommends that the United Nations assume a more active role in the promotion and protection of human rights in ensuring full respect for international humanitarian law in all situations of armed conflict, in accordance with the purposes and principles of the Charter of the United Nations. 97. The World Conference on Human Rights, recognizing the important role of human rights components in specific arrangements concerning some peace-keeping operations by the United Nations, recommends that the Secretary-General take into account the reporting, experience and capabilities of the Centre for Human Rights and human rights mechanisms, in conformity with the Charter of the United Nations.