West African leaders meet in Nigeria's capital Abuja for talks on a region in deepening crisis. Four countries have fallen under military rule and security risks continue to grow from Sahel jihadist conflicts. "We are confronted with the challenge of democratic consolidation, economic difficulties, climate changes and food insecurities among others" says Chairman of the Ecowas Authority of Head of states and President of Nigeria, Bola Tinubu, at the summit's opening. IMAGES AND SOUNDBITES