South Sudan's President Salva Kiir (front L) and South Sudan's rebel commander Riek Machar exchange documents after signing a ceasefire agreement during the Inter Governmental Authority on Development (IGAD) Summit on the case of South Sudan in Ethiopia's capital Addis Ababa, Feburary 1, 2015. PHOTO BY REUTERS/Tiksa Negeri
By Aaron Maasho and Katie Migiro
02/02/2015