Minister of Foreign Affairs Geoffrey Onyeama, H.E. Amb. Samantha Power, U.S. Permanent Representative to the United Nations, Ambassador of United States to Nigeria Amb. James Entwistle and Chief of Staff to President Buhari Abba Kyari as President Buhari receives in Audience H.E. Amb. Samantha Power, U.S. Permanent Representative to the United Nations in Statehouse on Thursday, April 21, 2016. Photo by Sunday Aghaeze.