(AP Photo/Mulugeta Ayene) Kenya's President Uhuru Kenyatta, center left, laughs with Zimbabwe's President Emmerson Mnangagwa, center, at the opening ceremony of the African Union summit in Addis Ababa, Ethiopia Sunday, Jan. 28, 2018. The leaders of the United Nations and the African Union urged stronger international cooperation at the opening Sunday of the African Union summit in the Ethiopian capital, Addis Ababa.