Sudan threatens to close border with South Sudan within days

Sudan said on Sunday it would close its border with South Sudan within days if its neighbour did not expel militant groups, the government told state media. Sudan regularly accuses its neighbour of backing insurgents in the Darfur, Blue Nile and South Kordofan regions that run along its southern border. South Sudan split away from Sudan in 2011 after decades of civil war fuelled by ethnic divides and disputes over oil.