Once upon a time, there was the G5 Sahel...In 2014, five Sahel countries - Mauritania, Mali, Burkina Faso, Niger and Chad - decided, with the support of a European power, to form a group of states called the G5 Sahel. The five countries shared a number of characteristics, chief among them the desert-like nature of their territory, with consequent vulnerability to climate change, the vastness of their territorial areas (with the exception of Burkina Faso), low population density, lan ...