South Sudan's President Salva Kiir (bottom L) and South Sudan's rebel commander Riek Machar (bottom R), together with African Union Commissioner for Peace and Security Smail Chergui (top L), Kenya's President Uhuru Kenyatta (top C) and Ethiopia's Prime Minister Hailemariam Desalegn, attend the signing a ceasefire agreement during the Inter Governmental Authority on Development Summit on the case of South Sudan in Ethiopia's capital Addis Ababa, Feburary 1, 2015.
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