Sudanese men hold up signs during the arrival of United Nations Secretary General Ban Ki-moon to the north Darfur capital of El Fasher September 5, 2007. Ban told journalists he would push for progress in peace talks between the Sudanese government and rebel groups, while laying the ground for deployment of a 26,000-strong "hybrid" force of U.N. and African Union peacekeepers. REUTERS/ Zohra Bensemra (SUDAN)