For over a week, representatives of South Sudan's President Salva Kiir and his former deputy Riek Machar, who is now leading the rebels, have been negotiating in the Ethiopian capital Addis Ababa. It's a good thing and it's important, said Wolf-Christian Paes, an expert on Sudan at the Bonn-based International Center for Conversion (BICC). However, the talks are only about a short-term cease-fire. According to Paes, none of the factions had yet begun to even contemplate how to resolve the actual conflict. Who controls the rebels? One of the problems that observers like Paes see is that the disparate group of warlords and officials...