Two documents on the Sudan released almost simultaneously last week expose the complexities and contradictions inherent in the search for peace in that country's conflict that has lasted two decades, killed two million people, displaced 4.5 million others and burnt hundreds of billions of dollars. And nowhere is this more dramatic than in the reports' treatment of the role of oil in the war between the Sudan People's Liberation Army (SPLA) and its allies, and the Government of Sudan [refers to Talisman Energy, Chinese National Petroleum Corporation, Petronas Carigali and Sudapet]