A/RES/57/135 Union, 5 of a referendum for self-determination of the people of Western Sahara that is impartial and free of all constraints, in conformity with Security Council resolutions 658 (1990) and 690 (1991), by which the Council approved the settlement plan; 7. Notes the fundamental differences between the parties in implementing the main provisions of the settlement plan; 8. Supports the efforts undertaken by the Secretary-General and his Personal Envoy to reach a political solution to the dispute on Western Sahara which will provide for self-determination for the people of Western Sahara; 9. Urges, in this regard, the two parties to continue their cooperation with the Secretary-General and his Personal Envoy with a view to reaching a mutually acceptable political solution to this dispute; 10. Takes note of the relevant resolutions of the Security Council, including resolutions 1349 (2001) of 27 April 2001 and 1359 (2001) of 29 June 2001 as well as resolution 1429 (2002) of 30 July 2002; 11. Calls upon the parties to cooperate with the International Committee of the Red Cross in its efforts to solve the problem of the fate of people unaccounted for, and calls upon the parties to abide by their obligation under international humanitarian law to release without further delay all those held since the start of the conflict; 12. Requests the Special Committee on the Situation with regard to the Implementation of the Declaration on the Granting of Independence to Colonial Countries and Peoples to continue to consider the situation in Western Sahara, bearing in mind the implementation of the settlement plan, and to report thereon to the General Assembly at its fifty-eighth session; 13. Invites the Secretary-General to submit to the General Assembly at its fifty-eighth session a report on the implementation of the present resolution. 73rd plenary meeting 11 December 2002 _______________ 5 On 8 July 2002, the Organization of African Unity ceased to exist and, in its place, the African Union came into force on 9 July 2002. 3