1) Western Sahara is a former Spanish colony whose status and sovereignty are disputed between Morocco and the Polisario Front representing the Sahrawi people.
2) The UN has sought to organize a referendum to allow self-determination for the people of Western Sahara since the 1970s, but Morocco opposes independence and disputes the Polisario Front's role.
3) MINURSO was established in 1991 to monitor the ceasefire between Morocco and the Polisario Front and help organize a referendum, but negotiations have been deadlocked for decades with no solution in sight.