Less than two weeks after the Sudanese government and rebels reached a partial agreement aimed at ending the conflict in Darfur, two clashes in that western Sudan region early Monday left at least 25 people dead and forced the evacuation of aid workers. Jan Pronk, the top United Nations envoy for Sudan, said 15 to 20 police officers had been killed when rebels of the Sudan Liberation Army carried out a dawn attack on the town of Tawila in northern Darfur. Six civilians were killed, the United Nations mission said. African Union peacekeeping troops rescued 45 aid workers from the town by helicopter.Full Story