Syria regime in Aleppo fightback

Syrian regime forces bolstered by Russian air strikes are making progress in the battleground city of Aleppo, rolling back the short-lived gains of a rebel offensive. The Hague-based Organisation for the Prohibition of Chemical Weapons said in it "continues to examine any credible reports" of such attacks in the war-ravaged country. It came as Moscow alleged a "poisonous agent" was fired Tuesday on the Salaheddin district of Aleppo from an area controlled by Islamists of the Nureddin al-Zenki rebel group, killing seven people.