South Sudan is facing one of the worst food crises in recent history with experts predicting some parts of the country could face famine by next year. According to the UN's food and agricultural agency South Sudan needs 1.3 million tons of food but only produces 900,000. And with fighting contunuing between government and rebel forces, aid agencies are concerned the food security situation could get worse. Al Jazeera's Anna Cavell reports from Morobo.