The official bio-data of Ibrahim Gambari who replaces Abba Kyari as President Buhari’s Chief of Staff, has been released by the presidency. The 75-year-old diplomat resumed office as President Muhammadu Buhari’s Chief of Staff on Wednesday May 13. Here’s his Bio-data. Professor Ibrahim A. Gambari, CFR, OCORT, a scholar-diplomat, is the Founder/Chairman of the Board of Directors of Savannah Centre for Diplomacy, Democracy and Development, a non-governmental think-tank on research, policy studies, advocacy and training on the nexus between conflict prevention …