The UN has said that days of tribal fighting in South Sudan may have left hundreds dead. <br /><br />An accurate death toll is still difficult to determine, but tens of thousands are believed to be hiding out in the bush.<br /><br />The battles between the rival Lou Nuer and Murle tribes have left a humanitarian crisis in the Jonglei region.<br /><br />Al Jazeera's Haru Mutasa reports from Juba.
