At least 72 civilians were killed over a seven-week period in a single county in South Sudan, with some beheaded and others burned alive, along with women experiencing sexual violence as interethnic violence roils the oil-rich region, the United Nations said on Monday. The bloodshed between February 17 and April 7 in Leer county in Unity state reportedly forced 40,000 people to flee their homes, with UN investigators recording 64 cases of sexual violence, the United Nations Mission in South Sudan (UNMISS) said. “UNMISS strongly condemns the widespread sexual violence, killings including behead…