New African Union chair addresses security in speech at summit Egyptian President Abdel Fattah el-Sisi officially takes over the rotating post of ceremonial head of the African Union at the two-day summit in Addis Ababa. Sisi addressed security on the continent in his speech, while UN Secretary-General Antonio Guterres congratulated African governments for keeping "borders, doors and hearts open to millions in need." IMAGES of the summit AND SOUNDBITES of el-Sisi and Guterres