Clashes reignited between the Sudanese army and rival paramilitaries earlier this week in the key Darfur town of El-Fasher, the United Nations said Sunday, killing at least 27 people in one day. Eyewitnesses have reported air strikes, artillery fire and machine gun clashes battering the city since Friday, when an hours-long battle left an estimated 850 people displaced, according to the UN. It also killed at least 27 that day, based on what the UN said were “unconfirmed reports”, as the city suffers a near-total communications blackout, with medics and human rights defenders barely able to get…