The Secretary to the Government of the Federation Mr. Boss Mustapha announced the appointment before the commencement of the Federal Executive Council meeting on Wednesday.
Professor Gambari’s appointment comes after the death of the former Chief of Staff to the President, Abba Kyari, who died of coronavirus (COVID-19) complications on April 17, 2020.
Professor Gambari served as the Minister for External Affairs between 1984 and 1985.
He held several leadership positions at the national and international levels and has built extensive contacts with governments, as well as public and private institutions, especially in Africa.
The 75-year-old diplomat was also the Chairman of the United Nations Special Committee Against Apartheid (1990-1994).
He later served as Under-Secretary-General and Head of the United Nations Department of Political Affairs between 2005 and 2007.