The United Nations has only been able to reach a fraction of the nearly 25 million people needing aid in war-devastated Sudan, the head of the UN’s humanitarian response in the country says. But assistance to even those four million could soon stop if the chronic lack of funding continues, Clementine Nkweta-Salami told AFP in an interview on Sunday. The UN’s humanitarian coordinator for Sudan said the situation is “catastrophic”, eight months into a conflict between rival generals that has torn the country apart. Aid workers have called it the “forgotten war”. On April 15, army chief Abdel Fat…