Damascus, Syria (AP) -- Russian warplanes attacked rebel-held areas in northern Syria for the first time in weeks on Sunday, as Syrian officials said more than 100 people were treated at hospitals for a suspected poison gas attack in the northern city of Aleppo that Damascus and Moscow blamed on rebels.
The rebels, who have denied carrying out any poison gas attacks, accused the government of trying to undermine a truce reached by Russia and Turkey in September during a summit in the Russian city of Sochi. The targeted area is rebel-held and home to extremist groups opposed to the truce such as the al-Qaida-linked Horas al-Din, which has described the deal as a "great conspiracy," and the Ansar al-Din Front.