By Dr. Bakary Sambe, President of the Timbuktu Institute - African Center for Peace Studies

Relations between Mauritania and Senegal, rooted in geographical, cultural and historical proximity, have been strengthened by the development of hydrocarbons as a strategic lever, notably through the Grand Tortue Ahmeyim (GTA) gas project. The recent joint visit by Mauritanian President Mohamed Ould Cheikh El Ghazouani and Senegalese President Bassirou Diomaye Faye to the GTA platform on 22 May 2025 marks a decisive step in this partnership. This event, combined with energy issues and regional challenges, underlines the need to strengthen bilateral cooperation for common and sustainable development.
The Grand Tortue Ahmeyim field is an emblematic regional cooperation project. Discovered in 2015 by Kosmos Energy, it contains around 450 billion cubic metres of gas, exploited by BP, Kosmos, Société mauritanienne des hydrocarbures (SMH) and Petrosen.

Since the start of production in January 2025 and the first export of liquefied natural gas (LNG) in April 2025, the GTA has propelled the two nations into the ranks of LNG exporting countries in Africa. With planned production of 2.5 million tonnes a year, the project promises significant revenues, shared equally (50-50) under the 2018 agreement. All observers note the two countries' commitment to managing this resource in a transparent and balanced manner. According to the joint press release, the latest meeting between the two heads of state marked "a major step forward in energy cooperation" between Mauritania and Senegal. The Mauritanian President also stressed the equitable nature of this partnership, underlining the shared desire to maximise the benefits for the populations of both countries.

The joint visit on 22 May 2025 is part of a series of high-level exchanges that demonstrate the two countries' desire to consolidate their relations. On 18 April 2024, the newly elected President Faye chose Mauritania for his first official visit abroad. Another meeting, on 11 November 2024 in Riyadh on the sidelines of the Organisation of Islamic Cooperation (OIC) summit, also enabled the two leaders to reaffirm their commitment to intensifying coordination on regional and international issues, including the management of the ATM.

If Mauritania and Senegal are to maximise the benefits of gas exploitation and consolidate their partnership, it is vital that they deepen their cooperation. Transparent and crucial governance of the gas project is essential. The creation of a Senegal-Mauritania secretariat, mooted in 2025, could institutionalise coordination and strengthen cooperation. Given the stakes involved, both countries need to invest more in training and infrastructure to transform revenues into sustainable development, particularly through sectors such as petrochemicals and energy. Similarly, past tensions, such as those relating to fishing, call for more concerted management of shared resources to avoid potential conflicts. But there is no doubt that the historical and cultural dimension of this relationship is a guarantee of sustainability in addition to the shared economic stakes. Over and above hydrocarbons and shared economic interests, relations between Mauritania and Senegal are above all spiritual and cultural. These relations, which have survived all previous temporary crises, are constantly fortified by a common foundation that draws its sources from the depths of our shared history.