G5 Sahel

G5 Sahel or G5S (French: G5 du Sahel) is an institutional framework for coordination of regional cooperation in development policies and security matters in west Africa. It was created on 16 February 2014 in Nouakchott, Mauritania, at a summit of five Sahel countries: Burkina Faso, Chad, Mali, Mauritania, and Niger. It adopted a convention of establishment on 19 December 2014, and is permanently seated in Mauritania. The coordination is organised on different levels. The military aspect is coordinated by the respective countries' Chiefs of Staff. The purpose of G5 Sahel was to strengthen the bond between economic development and security, and together battle the threat of jihadist organizations operating in the region (AQIM, MOJWA, Al-Mourabitoun, and Boko Haram).

On 15 May 2022, Mali announced its withdrawal from the alliance. On 3 December 2023, Niger and Burkina Faso announced their withdrawals from the alliance. On 6 December 2023, the remaining members Chad and Mauritania announced the imminent dissolution of the alliance.