The UN fears that genocide is looming in the Central African Republic, which has been riven by sectarian violence since a mostly rebel group ousted the president in March. On Thursday, the UN Security Council unanimously authorized the deployment of 1,200 French troops, who will join 2,000 African Union troops on the ground. Since the coup, the mostly-Muslim Seleka rebel alliance has been accused of widespread killings, kidnappings and sexual assaults. Christian counter-militias are fighting back in the capital of Bangui. In recent days they have mounted sustained assaults, killing at least 50.