ISLAMABAD: Afghanistan is seeing its sharpest-ever surge of child malnutrition, the World Food Programme said Monday, adding it needed $539 million to help the country’s most vulnerable families. Almost 10 million people, a quarter of Afghanistan’s population, face acute food insecurity. One in three children is stunted. The WFP said the rise in child malnutrition was linked to a drop in emergency food assistance over the past two years because of dwindling donor support.