By Victoria  Ojeme The Chairperson of the African Union, AU, President of South Africa, Cyril Ramaphosa, has appointed ex-Nigerian Finance Minister, Dr. Ngozi Okonjo-Iweala, Dr. Donald Kaberuka, Mr. Tidjane Thiam and Mr. Trevor Manuel as Special Envoys of AU. They are to mobilise international support for Africa’s efforts to address the economic challenges African countries […]