A former Ghanaian minister, Hanna Serwaa Tetteh, has been appointed as the director-general of the United Nations Office at Nairobi (UNON).
She replaces Ethiopian diplomat Ms Sahle-Work Zewde who will now be the Special Representative to the African Union and head of the United Nations Office to the African Union (UNOAU).
The postings were made on Friday by the UN Secretary General António Guterres.
Ms Tetteh served as Ghana's Minister for Foreign Affairs from 2013 to 2017, prior to which she was the Minister for Trade and Industry between 2009 to 2013.
While at Foreign Affairs, she was a member of her country's National Security Council and the Armed Forces Council.
She was also the chairperson of the Council of Ministers of the Economic Community of West African States (Ecowas), a 15-member state bloc, from 2014 to 2015.
During her tenure as Trade minister, Ms Tetteh also served in the economic management team, the board of the Millennium Development Authority, the National Development Planning Commission, and the Free Zones Board.
The 51-year-old lawyer has served two terms as a Member of Parliament, the first between December 2000 to January 2005 and the second oone between January 2013 to January 2017.
She holds a Bachelor of Laws (LLB) degree from the University of Ghana and has completed her professional law course at the Ghana School of Law. She was called to the Bar in October 1992.