The Sudanese government has said the UN cannot move new troops to its tense North-South border without its consent. It comes after the UN's peacekeeping chief said troops would be sent to "hotspots" at the request of the semi-autonomous South's president... in the run-up to a referendum on Southern independence due to be held in January... The referendum was part of a 2005 peace deal that ended the civil war. On Friday, UN peacekeeping chief Alain Le Roy said the UN force would increase its presence along the 2,000km (1,250 mile) border. He said the increase would be limited to...