[SPS]On 30 April, the mandate of the United Nations Mission for the Referendum in Western Sahara (MINURSO) - which has been tasked since 1991 with maintaining a ceasefire and monitoring Africa's longest territorial dispute between Morocco and the Sahrawi Polisario Front - was yet again renewed. The UN body was initially set up to facilitate a referendum for self-determination promised to the Sahrawi people. However, the referendum, planned for 1992, has failed to materialise amid disputes over who among the Mor