M23 rebel fighters walk as they withdraw near the town of Sake, some 42 km (26 miles) west of Goma November 30, 2012. A rebel pullback from Goma, seized by M23 from fleeing United Nations-backed government forces on November 20, would signal some progress in international efforts to halt the eight-month-old insurgency in eastern Democratic Republic of Congo. REUTERS/Goran Tomasevic