A/RES/51/167 Page 5 III 20. Recognizes the important progress made in understanding the relationship between trade and environment in the Committee on Trade and Environment of the World Trade Organization, as well as in the United Nations Conference on Trade and Development, and in the Commission on Sustainable Development, including the recommendations made at its fourth session, and requests the Conference to continue its work on trade, environment and development, in cooperation with relevant international organizations including the Commission on Sustainable Development, the United Nations Environment Programme, the Organisation for Economic Cooperation and Development, regional organizations and the World Trade Organization; 21. Requests the United Nations Conference on Trade and Development to continue its special role in promoting the integration of trade, environment and development, in accordance with paragraph 27 of resolution 50/95, by examining trade and environment issues from a development perspective, in close cooperation with the United Nations Environment Programme and the World Trade Organization and as task manager for the Commission on Sustainable Development; 22. Stresses the role of the United Nations Conference on Trade and Development in the context of the forthcoming special session of the General Assembly for the purpose of an overall review and appraisal of the implementation of Agenda 21; 23. Requests the United Nations Conference on Trade and Development, on the basis of the outcome of its ninth session, to identify and analyse the implications for development of issues relevant to investment, taking into account the interests of developing countries and bearing in mind the work undertaken by other organizations; 24. Reaffirms the need to give priority to the problems facing the least developed countries, and reaffirms in particular that actions, as appropriate, should be taken to assist the least developed countries to maximize the potential opportunities and minimize possible difficulties arising from the Uruguay Round agreements; 25. Requests Governments, organs, organizations and bodies of the United Nations system and intergovernmental and non-governmental organizations to take concrete measures to implement fully and as a matter of urgency the United Nations New Agenda for the Development of Africa in the 1990s,4 including the measures and recommendations agreed upon at its mid-term review, especially those related to trade and development; 26. Invites the United Nations Conference on Trade and Development, the World Bank and the United Nations Development Programme to improve collaboration between the Conference's country-level programmes for least developed countries and the overall macroeconomic and sectoral policy dialogue in respect of those countries at the World Bank Consultative Group and United Nations Development Programme Round Tables, bearing in mind General Assembly resolution 50/120 of 20 December 1995; 4 Resolution 46/151, annex, sect. II. /...