Five months of war in South Sudan has led to the deaths of thousands and the displacement of more than one million people. But officials warn that the tragedy could just be beginning. A serious food crisis is looming over the country, and the United Nations says that if action is not taken immediately, the consequences could be dire. So many people have been displaced by the fighting that the planting season was disrupted, creating major concerns about the next harvest. Fishermen cannot work the rivers. Livestock have been lost and abandoned. Cholera has broken out in the capital, Juba, and threatens other parts of the county.