Mauritania Joined Three Western Sahara Talks

MAURITANIA · REGION

The Mauritania neighbours are Senegal, Mali, Algeria and Western Sahara, and each border brings a different story for US readers. Together they decide who shares a gas field, who shelters refugees and who talks peace over a disputed desert territory.

Mauritania and Its Neighbours in Plain English

Mauritania is a desert republic on Africa’s Atlantic coast, with about 5.3 million people in 2025, according to World Bank data. Its economy produced about US$11.7 billion in 2025, or about US$2,200 per person, the same data show.

Mauritania neighbours four places by land: Senegal to the south and Mali to the east. Algeria lies to the north-east and the disputed territory of Western Sahara to the north.

Morocco lies beyond Western Sahara and is a main party in the dispute next door. The United Nations says tensions and low-intensity hostilities continue there between Morocco and the Polisario Front.

Mauritania counts as North African because it belongs to the Arab Maghreb Union, a five-nation club with Algeria, Libya, Morocco and Tunisia. It also sits at the edge of the Sahel, the dry belt south of the Sahara.

Our Mauritania guide covers the basics of the country, and the Mauritania hub holds all our coverage. A companion explainer on Tunisia and its neighbours covers another Maghreb member.

• The Polisario Front is the movement that seeks self-determination for Western Sahara, and it takes part in the UN-led talks.
• UNHCR is the United Nations refugee agency, which keeps the official count of refugees in Mauritania.
• The OMVS is the Senegal River Basin Development Organisation, a river-sharing body created in 1972.
• GTA stands for Greater Tortue Ahmeyim, the offshore gas project on the sea border between Mauritania and Senegal.

Senegal, the River and the Gas Field

Senegal lies to the south of Mauritania, along the Senegal River. The OMVS says on its own website that Mali, Mauritania and Senegal created it in Nouakchott on 11 March 1972.

The organisation’s headquarters are in Dakar, Senegal’s capital, and its job is to manage the river together. The same three countries have more to share offshore.

Greater Tortue Ahmeyim, known as GTA, sits on the maritime border between Mauritania and Senegal, in water up to 2,850 metres deep. Kosmos Energy, an American oil company and a partner in the project, says first gas flowed on 31 December 2024.

The first cargo of liquefied natural gas, or LNG, was exported in April 2025. The project’s nameplate capacity is about 2.7 million tonnes a year, Kosmos says.

Our report on Mauritania’s gas exports follows the sales figures quarter by quarter. The shared field ties the two capitals together in one project, which makes the border a matter for both treasuries.

Mali, the Eastern Border and the Refugees

Mali lies along the eastern side of Mauritania, and Mauritania neighbours a war that sends refugees across the line. UNHCR counted 190,815 registered refugees and asylum seekers in Mauritania on 30 September 2026.

UNHCR also estimates the real total, including people not yet registered, at about 305,000. Most live in the Hodh Chargui region on the border, where 178,341 are registered.

Amnesty International, a human rights group, published a report on 29 September 2026 about abuses inside Mali. It says the Malian army and Wagner, a Russian force, killed at least 34 civilians in seven places between June 2023 and December 2025.

Amnesty interviewed 119 refugees from the Ségou, Mopti and Timbuktu regions in Hodh Chargui for the report. It says it sent its findings to the Malian authorities on 3 August 2026 and had received no reply by publication.

For US travellers, the State Department rates Mauritania Level 3, Reconsider Travel, in an advisory issued on 15 July 2025. It lists all areas within 100 kilometres of the Mali and Algeria borders as places not to travel to.

Western Sahara, Morocco and Algeria

North of Mauritania lies Western Sahara, a disputed territory whose future the United Nations is still trying to settle. The Security Council adopted Resolution 2797 on it in 2025, a UN report of 1 October 2026 says.

The UN and the United States then co-chaired three rounds of direct talks in the first quarter of 2026. Morocco, Algeria, Mauritania and the Polisario Front all took part, the first such talks in seven years.

Morocco, Algeria and Mauritania were represented throughout by their foreign ministers, the UN report says. The Polisario Front sent its foreign policy chief, and Michael Waltz, the US ambassador to the UN, co-chaired the rounds.

At the Madrid round on 8 and 9 February 2026, Mauritania called for a commission on the final borders of the disputed territory. The UN report says Mauritania repeated the idea in later sessions.

The UN envoy, Staffan de Mistura, met President Mohamed Ould Ghazouani in Nouakchott on 18 June 2026. He also met Algeria’s foreign minister in Algiers on 15 June 2026.

Our report on a draft Security Council text on Western Sahara follows the next diplomatic step. Algeria, which also borders Mauritania and takes part in the talks, is the other neighbour at the table.

Regional Clubs and Where Mauritania Stands

Mauritania is one of five members of the Arab Maghreb Union, according to the union’s own website. The others are Algeria, Libya, Morocco and Tunisia, and the secretariat’s address is in Rabat, Morocco.

The union lists Tarak Ben Salem as its secretary general. Mauritania also shares the OMVS river club with Mali and Senegal, so it sits in two regional clubs.

The UN report records one idea that Mauritania raised in the talks, the border commission. The UN and the United States lead the rest of the process.

At home, Prime Minister Mokhtar Ould Diay chaired a ministerial committee on 22 October 2026, the Prime Minister’s office says. The committee is preparing the second phase of a development programme for Nouakchott, the capital.

Washington and Nouakchott

The United States was the first country to recognise Mauritania’s independence from France in 1960, according to the State Department. Mauritania is a member of the Trans-Sahara Counterterrorism Partnership, a US-backed security programme.

The State Department says Mauritania lost trade benefits under the African Growth and Opportunity Act, a US trade preference law, in 2019. It cites a lack of progress against forced labour and hereditary slavery.

It also says the US government obligated over US$68 million in aid to Mauritania in fiscal 2022. The money covered education, humanitarian and development programmes.

Washington’s role in Western Sahara is direct, since the United States co-chairs the UN-backed talks. It is also the Security Council’s lead drafter, so US officials sit where Mauritania’s border idea was raised.

What It Means for US Readers

Travellers should read the State Department’s Level 3 advisory before any trip and avoid the border zones near Mali and Algeria. Because Mauritania neighbours Mali, where conflict has pushed refugees across the line, the eastern border is where the advisory is strictest.

Energy watchers should follow the shared gas field, which runs as one project across the sea border with Senegal. Diplomats and analysts should watch the Western Sahara talks, where the United States helps lead and Mauritania has a seat.

What Is Not Known

No final date has been set for the end of the Western Sahara talks. It is not yet clear whether the border commission will be created.

UNHCR’s total of about 305,000 refugees is an estimate, and the exact number of unregistered people is not published. The Malian authorities had not replied to Amnesty’s findings when the report appeared on 29 September 2026.

Frequently Asked Questions

Which countries border Mauritania?

Mauritania shares land borders with Senegal to the south, Mali to the east and south-east, Algeria to the north-east and Western Sahara to the north. The Atlantic Ocean lies to the west.

Is Mauritania in North Africa or West Africa?

Mauritania belongs to the Arab Maghreb Union with Algeria, Libya, Morocco and Tunisia, which ties it to North Africa. It also borders Mali and Senegal, so it sits at the edge of the Sahel.

What is Greater Tortue Ahmeyim?

It is an offshore gas project on the sea border between Mauritania and Senegal. First gas flowed on 31 December 2024, and the first LNG cargo shipped in April 2025.

How many refugees live in Mauritania?

UNHCR counted 190,815 registered refugees and asylum seekers on 30 September 2026. It estimates the real total, including unregistered people, at about 305,000.

What does Mauritania want in the Western Sahara talks?

At the Madrid round of 8 and 9 February 2026, Mauritania asked for a commission to clarify the final borders of the disputed territory. The UN says it repeated the idea in later sessions.

Is Mauritania safe for US travellers?

The State Department rates Mauritania Level 3, Reconsider Travel, in an advisory issued on 15 July 2025. It says not to travel within 100 kilometres of the Mali and Algeria borders.

Who leads Mauritania in October 2026?

Mohamed Ould Ghazouani is president, in office since 2019. Mokhtar Ould Diay is prime minister, and his office reported him chairing a ministerial committee on 22 October 2026.

Sources: United Nations Secretary-General, report on the situation concerning Western Sahara, 1 Oct 2026; UNHCR, Operational Data Portal, Mauritania, 30 Sep 2026; Amnesty International, report on war crimes along the Mauritanian border in Mali, 29 Sep 2026; World Bank, population and GDP data for Mauritania, 8 Oct 2026; OMVS, Senegal River Basin Development Organisation, about us, 28 Oct 2026; Kosmos Energy, Greater Tortue Ahmeyim project page, 28 Oct 2026; US State Department, Mauritania travel advisory, 15 Jul 2025; US State Department, US Relations With Mauritania, 28 Oct 2026; Arab Maghreb Union, member countries, 28 Oct 2026; Prime Minister’s Office of Mauritania, news page, 22 Oct 2026; Presidency of Mauritania, news page, Oct 2026.

Editorial responsibility: Matthias Camenzind, Editor-in-Chief · Editorial standards · Report an error