Alarming new food security data from South Sudan shows that 57 percent of the population will be acutely food insecure by the 2025 lean season. Three United Nations agencies warned on Monday that those fleeing war in Sudan, as well as young children, face some of the highest levels of hunger and malnutrition in South Sudan, as economic pressures, climate extremes and the effects of the conflict in Sudan drive a worsening hunger crisis.