A soldier from the rebel Sudan Liberation Army, SLA, poses outside the headquarters of the African Union in Muhajiria, Sudan Friday, Nov 18, 2005 where his leader, Meni Menawi Arkowri, met with senior African Union leaders. The SLA troops are mostly youth from african tribal ethnic groups in Darfur who are well informed about the terrain of the region and thus effective opponents in a rebel bush war. After decades of clashes over land and water in Darfur that often pitted the region's ethnic Arab tribes against its ethnic African tribes, conflict erupted on a wider scale in February 2003. (AP Photo/Abd Raouf)