Rebels in Sudan’s Darfur region ambushed a South African unit that is part of a U.N.-African Union peacekeeping mission on Sunday, killing one soldier and seriously injuring another, the South African military said. South African troops repelled the morning ambush, the military said. Darfur has been in turmoil since 2003, when ethnic Africans rebelled, accusing the Arab-dominated Sudanese government of discrimination. The United Nations says 300,000 people have died in the conflict and 2.7 million have fled their homes. Sudan’s president, Omar al-Bashir, is wanted by the International Criminal Court on charges of genocide and war crimes for atrocities linked to the Darfur fighting. Al-Bashir rejects the court’s authority.