AFP - The freight train rumbles over the Blue Nile bridge and snakes through the capital. It could take weeks to reach its destination, in Darfur, for despite the potential to link up a divided nation, Sudan's railways are derelict, after years of sanctions and neglect. With more than 5,000 kilometres (3,100 miles) of track, Sudan has one of the longest railways in Africa, extending from Port Sudan on the Red Sea to Nyala in the war-torn west, and from Wadi Halfa on the Egyptian border to Wau in the far south...[continued]