Mohamed Ibn Chambas is the former Special Representative of the Secretary-General and Head of the United Nations Office for West Africa and the Sahel (UNOWAS). Before joining UNOWAS, he was the African Union-United Nations Joint Special Representative for Darfur and Head of the African Union-United Nations Hybrid Operation in Darfur. From 2010 to 2012, Mr. Chambas was Secretary-General of the African, Caribbean and Pacific Group of States. He served as President of the Economic Community of West African States (ECOWAS), 2006 -2009, and Executive Secretary, 2002-2005. A former Member of Parliament of Ghana, Mr. Chambas served as Deputy Foreign Secretary of Ghana in 1987 and Deputy Minister for Education in charge of Tertiary Education from 1997 to 2000.