Syria accuses rebels of using chemical weapons BEIRUT (Reuters) - Syria's state news agency accused rebels on Tuesday of using chemical weapons in an attack in the northern province of Aleppo which it said killed 15 people. "Terrorists fired a rocket containing chemical substances in the Khan al-Assal area of rural Aleppo and initial reports indicate that around 15 people were killed, most of them civilians," SANA news agency said. Reporting by Dominic Evans; Editing by Janet Lawrence