About 1.4 million children under the age of five are suffering from malnutrition in South Sudan, caught in the grip of widespread flooding and intercommunal conflict, the British charity Save the Children said on Friday. It said the world’s youngest country, which has a largely rural population, is reeling from “its worst hunger crisis” since independence from Sudan in 2011. “The situation has deteriorated in recent months with more than 615,000 people impacted by an unprecedented fourth consecutive year of large-scale flooding, destroying homes, crops,” Save the Children said in a statement. …