A top Ugandan rebel leader has arrived at a neutral camp in southern Sudan as part of a truce to end 19 years of conflict with the government, the chief mediator said Monday.Lord’s Resistance Army deputy Vincent Otti, who is wanted by the International Criminal Court for war crimes, showed up at Ri kwangba camp, just 550 yards north of the border with the Democratic Republic of Congo, southern Sudan’s vice president Riek Machar said. Full Story