At least 65 people have been killed in renewed tribal clashes in Sudan's Darfur, a tribal leader said on Thursday, two days after the United Nations approved a massive peacekeeping force for the war-wracked region. The fighting, in which another 25 people were wounded, took place in Southern Darfur on Tuesday and raised the toll from two days of clashes between the Rzigat Aballa tribe and the Torjam to at least 140 dead.