Western Sahara After MINURSO: 35 Years of UN Peacekeeping End in a Veto Standoff

On November 1, the United Nations mission in Western Sahara entered its liquidation phase. After 35 years, MINURSO — the UN Mission for the Referendum in Western Sahara — stopped being a peacekeeping operation, not because the dispute it was sent to settle had been resolved, but because the Security Council could not agree on what should replace it. Its equipment will be shipped back to troop-contributing countries, and a smaller UN team will oversee the winding-down. What leaves with it is the only neutral pair of eyes on a territory where low-intensity hostilities have continued since 2020.

MINURSO was created in 1991, after a UN-brokered ceasefire between Morocco and the Polisario Front, to do two things: monitor the ceasefire and organise a referendum in which the people of Western Sahara would choose between independence and integration with Morocco. The referendum never happened. The two sides could never agree on who was eligible to vote — Morocco wanted the rolls to include Sahrawis living in the territory it controls, while the Polisario insisted on Spain's colonial census from before Spain withdrew in 1975. So the mission stayed, monitoring a ceasefire for a vote that never came, while the dispute hardened into one of Africa's longest-running stalemates. Morocco controls most of the territory, a desert region roughly the size of Britain on Africa's north-west Atlantic coast; the Polisario, backed by Algeria, runs its independence movement from refugee camps around Tindouf and seeks a Sahrawi state.

The end came in a single day of voting on October 30. A United States draft won 11 votes in favour, with three abstentions, but was vetoed by Russia. It would have extended the mission for a year, dropped the word "referendum" from its name to become MINUSO, made Morocco's autonomy plan — self-rule under Moroccan sovereignty — the only basis for further talks, and ended the peacekeeping operation on April 30, 2027, replacing it with a political mission. A rival Russian draft, extending MINURSO unchanged to October 31, 2027, won only three votes, with the United States against and 11 abstaining, short of the nine needed. Resolution 2797 (2025) had already called Morocco's autonomy plan the "most feasible" solution; the 2026 drafts fought over how much further to go.

The reactions told the story of the deadlock. Morocco welcomed the outcome: its Royal Cabinet said UN personnel and equipment should leave within days, and Foreign Minister Nasser Bourita called the referendum reference an anachronism. The Polisario said it was concerned at the deadlock and thanked Russia for blocking a draft it said would have undermined the Sahrawi people's right to self-determination. Algeria expressed deep regret. Secretary-General António Guterres, announcing the liquidation phase, said he remained concerned about the security situation and the risk of hostilities escalating, urged all parties to exercise maximum restraint, and stressed that the mission's departure does not abrogate the people's inalienable right to self-determination. The UN will keep working through his Personal Envoy, Staffan de Mistura — diplomacy without, for now, a mission on the ground.

That distinction matters. MINURSO's 534 authorised observers did not keep the peace by force; they kept it verifiable, watching a ceasefire line both sides accuse each other of breaking since the Polisario withdrew from the ceasefire in 2020. Without them, the next incident in a remote desert — a clash, a build-up, a blocked road — will be reported by the parties themselves, each with an interest in how it is told. It is also the sharpest point of the Morocco–Algeria rivalry, and the territory is believed to hold considerable offshore oil, phosphates and fisheries. A dispute with no monitor and no negotiating table is not a settled dispute; it is an unobserved one.

The honest question now is not whether MINURSO deserved to continue in its old form — a mission built for a referendum no one could agree how to hold had long outlived its design. It is whether the Council can agree on anything to put in its place. The American draft already sketched the template — a political mission, not a peacekeeping force — and 11 members voted for it. The veto was not about whether the UN should have a role, but about its governing language: autonomy as the only basis versus self-determination with independence still on the table. That gap is narrow enough to bridge in principle, and wide enough — given Morocco's preference for closure and Russia's insistence on the referendum wording — to stay open for months. My judgment is that a new UN presence is more likely to be negotiated than not over a longer horizon, but that by the middle of next year the odds are still against it — roughly 30%. The mission that ended on November 1 lasted 35 years because no one could agree on what would end the dispute; the absence that follows it may last a while for exactly the same reason.