As the rebels gained the upper hand in the battlefield by capturing most of Goma - the biggest city in the east - South Africa fired a diplomatic salvo, warning that further attac

M23 fighters, who the UN and several nations say are backed by Rwanda, have made substantial gains in eastern DRC, taking the major city of Goma last week and vowing to march on the capital, Kinshasa,

The government of Republic of Rwanda insists there was no warning given during the two telephonic conversations between President Cyril Ramaphosa and President Paul Kagame.