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 formed 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 is to strengthen the bond between economic development and security, and together battle the threat of jihadist organizations operating in the region (AQIM, MUJWA, Al-Mourabitoun, Boko Haram).