UN peacekeeping mission in Western Sahara ends after 35 years

Overview

Updated 52 minutes ago

The United Nations Mission for the Referendum in Western Sahara, known as MINURSO, stopped operating at midnight on 31 October 2026. It had been in the territory since 1991, sent to monitor a ceasefire and prepare a vote on independence or integration with Morocco. That vote never happened.

The mission ended because the Security Council could not agree on a new mandate. A US draft that would have extended MINURSO for a year and made Morocco's autonomy plan the only basis for talks drew 11 votes in favour and a Russian veto. A Russian counter-draft failed too. Secretary-General António Guterres said he remains concerned about the security situation and the risk of hostilities escalating.

Why it matters

With no UN observers left, drone strikes and skirmishes along a 2,700-kilometre sand wall can no longer be independently verified.

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Key Indicators

35 years

Duration of the mission

MINURSO operated from April 1991 until its mandate expired on 31 October 2026.

~200

Personnel at the end

Civilian staff, military observers and staff officers from more than 35 countries, plus mine-action specialists.

Operating bases

Four west of the sand wall and five east, with a liaison office in Tindouf, Algeria.

2,700 km

Length of the sand wall

The barrier separating Moroccan-controlled territory from Polisario-held areas.

Voices

Curated perspectives — historical figures and your fellow readers.

People Involved

António Guterres

UN Secretary-General

In office; confirmed the mission's end on 1 November 2026

Staffan de Mistura

UN Secretary-General's Personal Envoy for Western Sahara

Continuing mediation without a peacekeeping mission

Brahim Ghali

Secretary-General of the Polisario Front

Leads the movement seeking an independent Sahrawi Republic

Organizations Involved

United Nations Mission for the Referendum in Western Sahara (MINURSO)

UN peacekeeping mission

Operations ceased 31 October 2026; liquidation phase began 1 November

The UN mission created in 1991 to monitor a ceasefire and prepare a referendum that was never held.

United Nations Security Council

UN body

Failed to renew MINURSO's mandate after competing vetoes

The 15-member body that authorizes peacekeeping missions and failed to agree on MINURSO's future.

Polisario Front

Political and military movement

Seeks an independent Sahrawi Republic

The Algeria-backed movement representing Sahrawi independence claims in Western Sahara.

Kingdom of Morocco

Sovereign state

Controls most of Western Sahara; proposes autonomy under Moroccan sovereignty

Morocco claims Western Sahara and has proposed self-government under its sovereignty.

Timeline

November 1975 November 2026

8 events Latest: Yesterday

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November 2026
Mission ceases operations; liquidation begins
Latest Statement

Guterres confirms the end of the mission, warns of escalation risk and urges restraint. A reduced team begins returning assets to troop-contributing countries.
Yesterday
October 2026
MINURSO's mandate expires
Legal

With no renewal agreed, the mission's authorization lapses after 35 years.
2 days ago • midnight
Competing drafts fail in the Security Council
Diplomacy

The US draft wins 11 votes but is vetoed by Russia. A Russian counter-draft draws three votes in favour and is rejected.
3 days ago
2025
Security Council backs Morocco's autonomy plan
Diplomacy

A US-drafted resolution accepts autonomy under Moroccan sovereignty as the most feasible solution to the conflict.
2025
November 2020
Ceasefire collapses
Conflict

Fighting resumes along the sand wall. MINURSO becomes an observer mission to a low-intensity war with drone attacks.
November 2020
April 2007
Morocco presents autonomy proposal
Diplomacy

Rabat proposes self-government for Western Sahara under Moroccan sovereignty as the basis for negotiations.
April 2007
April 1991
Security Council creates MINURSO
Diplomacy

Resolution 690 establishes a mission to monitor a ceasefire and prepare a referendum on independence or integration with Morocco.
April 29th, 1991
November 1975
Spain withdraws; Morocco claims the territory
History

Spain ends its colonial rule. Morocco launches the Green March and takes control of most of Western Sahara; the Polisario Front declares a Sahrawi Republic.
November 1975

Scenarios

Security Council approves a short technical extension

Possible Resolves by Q1 2027

Discussed by: African Security Analysis, which called a narrowly framed arrangement the most plausible immediate response

After the vetoes, the likeliest diplomatic move is a short extension that separates the mission's continuity from the dispute over autonomy and self-determination. That would restore observers and mine-action support without settling sovereignty. As of 1 November, no such compromise had been adopted.

Monitoring vacuum persists as low-intensity fighting continues

Likely Resolves by Oct 31, 2027

Discussed by: African Security Analysis and former MINURSO officials quoted by El País

Without observers, incidents along the 2,700-kilometre sand wall become harder to verify. The Secretary-General has warned of escalation. A weaker monitoring environment could let local incidents go unrecorded or be exploited politically.

De Mistura brokers a renewed political framework

Unlikely Resolves by End of 2027

Discussed by: UN officials, who say mediation continues through the personal envoy

The UN says it will keep working through Staffan de Mistura. A joint framework would require Morocco and the Polisario Front to agree on talks that do not prejudge sovereignty. Neither side has accepted such terms in three decades of negotiation.

Historical Context

3 moments from history that rhyme with this story — and how they unfolded.

2000-2008

UNMEE in Eritrea and Ethiopia (2008)

The UN Mission in Ethiopia and Eritrea monitored a contested border after a 2000 peace deal. Eritrea restricted fuel supplies and troop movement, and the Security Council ended the mission in July 2008.

Then

The border stayed tense with no UN observers in place.

Now

The two countries remained in a frozen standoff until a 2018 peace agreement.

Why this matters now

Shows what a monitoring vacuum looks like when a mission ends without a political settlement.

1988-1991

The 1991 Settlement Plan

Morocco and the Polisario Front accepted UN proposals for a ceasefire and a referendum in which Sahrawis would choose independence or integration with Morocco. The Security Council created MINURSO in April 1991 to carry it out.

Then

A ceasefire took hold, but disputes over voter identification stalled the referendum.

Now

MINURSO spent three decades as a monitoring mission rather than a referendum organizer.

Why this matters now

The mandate that just expired was built for a vote that was never held.

October 1975

ICJ advisory opinion on Western Sahara (1975)

The International Court of Justice found no ties of territorial sovereignty between Western Sahara and Morocco or Mauritania. Days later, Morocco launched the Green March as Spain prepared to withdraw.

Then

Spain withdrew, and Morocco took control of most of the territory.

Now

The Polisario Front declared a Sahrawi Republic and fought a guerrilla war until the 1991 ceasefire.

Why this matters now

The legal question was answered in 1975; the political one has not been.