Sido, a village on the Chad side of the border, is caught up in the turmoil in the Central African Republic. Its twin, across the border, is still controlled by Muslim Seleka rebels. It is a key crossing point between the two countries. Since conflict started in December some 35,000 people – mostly Muslims fleeing the violent reprisals of anti-Balaka Christian militia – have arrived here, some on foot but mostly in convoys escorted by the Chadian army. More than half of them have carried on into Chad, but 14,000 have stayed put.