Three security experts have urged the United Nations (UN), the African Union (AU) and ECOWAS to step-up their efforts to stabilize Mali, Burkina Faso and other countries in the Sahel Region. The experts, who made the appeal include Dr Festus Aubyn, Research Fellow, Faculty of Academic Affairs and Research (FAAR), Kofi Annan International Peacekeeping Training Centre (KAIPTC); Mr Mutaru Mumuni …