One month into South Sudan's crisis

Government soldiers prepare to deploy from the capital, Juba on January 13, 2013 as fighting continues to rage in south Sudan. Government troops in South Sudan were advancing today on Bor, the last state capital still in rebel hands, as peace talks in neighbouring Ethiopia appeared to make little progress towards a ceasefire. Government troops recaptured the key north oil city of Bentiu last week, but have since grappled with rebel fighters closer to the capital Juba -- with new clashes reportedly taking place just 20 kilometres from Juba on Sunday. AFP PHOTO/Charles LOMODONGCHARLES LOMODONG/AFP/Getty Images

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    One month into South Sudan's crisis

What started as an attempted coup has turned into a humanitarian crisis in South Sudan. CNN's Isha Sesay reports.