A/RES/57/187 solidarity and burden- and responsibility-sharing, to cooperate and to mobilize resources with a view to enhancing the capacity of and reducing the heavy burden borne by countries that have received large numbers of refugees and asylum-seekers, and calls upon the Office of the High Commissioner to continue to play its catalytic role in mobilizing assistance from the international community to address the root causes as well as the economic, environmental and social impact of large-scale refugee populations in developing countries, particularly least developed countries, and countries with economies in transition; 10. Strongly reaffirms the fundamental importance and the purely humanitarian and non-political character of the function of the Office of the High Commissioner of providing international protection to refugees and seeking permanent solutions to refugee problems, recalls that these solutions include voluntary repatriation and, where appropriate and feasible, local integration and resettlement in a third country, reaffirming that voluntary repatriation remains the preferred solution, supported by necessary rehabilitation and development assistance to facilitate sustainable reintegration; 11. Emphasizes the obligation of all States to accept the return of their nationals, calls upon States to facilitate the return of their nationals who have been determined not to be in need of international protection, and affirms the need for the return of persons to be undertaken in a safe and humane manner and with full respect for their human rights and dignity, irrespective of the status of the persons concerned; 12. Recognizes that adequate and timely resources are essential for the Office of the High Commissioner to continue to fulfil the mandate conferred upon it through its statute, 12 and by subsequent General Assembly resolutions concerning refugees and other persons of concern, and urges Governments and other donors to respond promptly to the global appeal issued by the Office for requirements under its annual programme budget; 13. Requests the High Commissioner to report on his activities to the General Assembly at its fifty-eighth session. 77th plenary meeting 18 December 2002 _______________ 12 Resolution 428 (V), annex. 3