UNITED NATIONS - The UN Security Council renewed a peacekeeping mission in South Sudan for second year on Thursday as UN chief Ban Ki-moon warned the future of the year-old state was tied to developing good relations with former civil war foe 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.

Border clashes between the neighbors earlier this year, which culminated with Juba briefly seizing a disputed oil field, threatened to spiral into war until the UN Security Council threatened the pair with sanctions in a May 2 resolution.

Ban said in a report to the 15-member Security Council that most of the challenges faced by South Sudan, already one of the world's poorest countries, were "linked in one way or another to the need to cultivate constructive relations with the Sudan."

Please LIKE our Facebook page - it makes us stronger