Aid groups : Peace deal signed in 2005 ` ` on the brink of collapse '' Aid groups : About 2,500 people killed , 350,000 fled in southern Sudan last year . U.N. : More people died in southern Sudan in 2005 than in Darfur . Report : A resumption of conflict between north and south in Sudan , meanwhile , would make a sustainable peace impossible in Darfur , a region of western Sudan that has been the scene of what the U.S. calls genocide , the aid groups said . Protecting civilians should be core priority for UN missions .
Aid groups : Peace deal signed in 2005 ` ` on the brink of collapse '' Aid groups : About 2,500 people killed , 350,000 fled in southern Sudan last year . U.N. : More people died in southern Sudan in 2005 than in Darfur . Report : Protecting civilians should be core priority for UN missions .