Ethiopia's Prime Minister Hailemariam Desalegn speaks during the resumption of South Sudan negotiations in Addis Ababa February 11, 2014. South Sudanese rebels withdrew on Tuesday a threat to boycott peace talks with the government, saying mediators had promised to address their list of demands. The rebels said on Monday evening that they wanted four remaining political prisoners held by the government to be released and the Ugandan army, which has been backing President Salva Kiir, to withdraw from South Sudan. They had threatened otherwise not to attend the resumption of talks that last month secured a ceasefire in a conflict that has killed thousands and displaced more than half a million South Sudanese since it broke out on December 15. Pictures taken February 11, 2014. REUTERS/Tiksa Negeri (ETHIOPIA - Tags: POLITICS CIVIL UNREST) - RTX18NO5