JUBA, Aug. 13 (Xinhua) -- The Intergovernmental Authority on Development (IGAD) on Friday urged rival opposition factions in South Sudan to cease hostilities and abide by the 2018 revitalized peace deal. During a meeting with First Vice President and leader of Sudan People's Liberation Movement/Army-in Opposition (SPLM/A-IO) Riek Machar, Workneh…
