The UN Security Council renewed a peacekeeping mission in South Sudan for second year on Thursday. Ban said in a report to the 15-member Security Council that most of the economic challenges faced by South Sudan are "linked in one way or another to the need to cultivate constructive relations with the Sudan." The UN mission in South Sudan, known as UNMISS, was created after South Sudan seceded from Sudan in July 2011, six months after a referendum agreed under a 2005 peace deal that ended decades of civil war that killed some 2 million people.