Sudan’s army used anti-aircraft missiles on Tuesday to shoot down drones targeting its headquarters in the city of Shendi, witnesses and army sources said, the latest in a series of such drone attacks. None of the drones hit their target, the army sources said. Reuters could not independently verify the report. The head of Sudan’s army, General Abdel Fattah al-Burhan, arrived on Monday in Shendi, which is some 180 km (112 miles) north of the capital Khartoum, army media reported earlier. It was not immediately clear whether he remains in the area. Sudan’s army is battling the paramilitary Rapi…