A/RES/55/195 event that those resources prove to be insufficient, requests the Secretary-General to seek extrabudgetary funding from all possible sources; 11. Calls upon all States in a position to do so to make voluntary financial contributions to the Secretariat to assist developing countries, in particular the least developed countries, and their civil society partners to prepare adequately for, and be fully involved in, the preparatory process and the special session itself; 12. Reiterates its invitation to all relevant organs, funds and programmes, as well as the agencies of the United Nations system, including the Bretton Woods institutions, to continue to contribute to and be actively involved in the preparatory process and the special session; 13. Welcomes the launching of the Cities Alliance initiative by the United Nations Centre for Human Settlements (Habitat) and the World Bank to implement effectively the Cities without Slums programme of action as part of the efforts to achieve the twin goals of the Habitat Agenda, namely, adequate shelter for all and sustainable human settlements development in an urbanizing world, requests the Executive Director of the Centre to take a leadership and coordinating role in this initiative, and urges the Cities Alliance to include national Governments of developing countries as well as relevant United Nations organizations and specialized agencies in this initiative; 14. Requests the Executive Director of the United Nations Centre for Human Settlements (Habitat) to report to the special session on the Cities Alliance initiative, including on its contribution to the implementation of the Habitat Agenda; 15. Requests the Preparatory Committee and the special session to take into account the outcome of the coordination segment of the Economic and Social Council on the implementation of the Habitat Agenda within the United Nations system; 7 16. Requests the Secretary-General to submit to it at its fifty-sixth session a report on the special session; 17. Decides to include in the provisional agenda of its fifty-sixth session an item entitled “Implementation of the Habitat Agenda and outcome of the special session of the General Assembly on this topic”. 87th plenary meeting 20 December 2000 7 A/55/3, chap. V. For the final text, see Official Records of the General Assembly, Fifty-fifth Session, Supplement No. 3. 3