"Mauritania: Chad and Mauritania Pave Way to Dissolve G5 Anti-Militant Alliance "

"This follows the withdrawal of the other three members, Mali, Burkina Faso, and Niger. After Mali's exit was announced earlier, Mauritania and Chad said they "take note of and respect the sovereign decision" of Burkina Faso and Niger to quit...''

https://allafrica.com/stories/202312080407.html