From L, Belgian Prime Minister Charles Michel, President of Burkina Faso Roch Marc Christian Kabore, Mauritania's President Mohamed Ould Abdel Aziz, Mali’s President Ibrahim Boubacar Keita, French President Emmanuel Macron, Chad's President Idriss Deby, Niger's President Mahamadou Issoufou, German Chancellor Angela Merkel and Italy's Prime Minister Paolo Gentiloni pose for a group photo during a conference to discuss how to speed up the implementation of the G5 West African counter-terrorism force, in La Celle Saint-Cloud, near Paris, France, December 13, 2017. REUTERS/Michel Euler/Pool