S.Sudan says to quit border zone, seeks end to clashes
Sudanese leader declares emergency in some border areas
S. Sudan says 21 dead in clash with Sudanese-backed militia
Khartoum and Juba accuse each other of supporting rebel militia to destabilise their opponents, and each denies the other's charges
Sudan defends use of air strikes in South Sudan conflict
Weeks of fighting along Sudan and South Sudan's 1,800 km (1,100 mile) contested border has brought the neighbours close to a full-blown war
Sudan arrests foreigners in disputed border region
Sudanese army spokesman al-Sawarmi Khalid said the foreigners had been arrested with a South Sudanese soldier in Heglig, travelling in vehicles that contained military equipment