Tribal violence in Sudan?s restive West Darfur region over the weekend left at least 83 people dead and nearly 200 wounded, authorities in Khartoum said on Sunday. Clashes first erupted in the provincial capital of Genena on Saturday after a fist fight between two men, one Arab and one ethnic African, The Associated Press reported. The Arab man was stabbed to death and his family, from the Rizeigat tribe, attacked...