Russia resumes airborne attack on northern Syria

DAMASCUS, Syria — 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.

Russian military spokesman Maj. Gen. Igor Konashenkov told reporters in Moscow that Russian warplanes destroyed militant positions in northern Syria.

The latest wave of shelling and airstrikes in northern Syria is the most serious violation of a truce reached by Russia and Turkey that brought relative calm to the country’s north for the past two months.

The Britain-based Syrian Observatory for Human Rights and the Thiqa News Agency, an activist collective, said warplanes pounded rebel-held areas west and south of Aleppo city. The airstrikes were the first since the truce went into effect on Sept. 17.

Syria’s Arab News Agency, SANA, said Syrian troops pounded rebel positions near Aleppo “inflicting heavy losses among terrorists.”

Konashenkov said earlier that Russian chemical weapons specialists have been dispatched to Aleppo. Russia is a close ally of President Bashar Assad and has intervened in recent years to turn the tide of the civil war in his favor.