At least four people were injured in powerful explosions at an arms depot in northern Syria, the country's state media reported. Following the explosions, civilians were warned to stay away from the area.The first explosion occurred early Monday morning at a Syrian military facility near the Al-Eis area, south of the city of Aleppo. A series of explosions followed. The cause of the blasts was not immediately known.Faisal Mohammad Ali, head of civil defense operations in Aleppo, said rescuers had...