TEHRAN, Aug. 23 (Xinhua) -- Iran's Foreign Minister Mohammad- Javad Zarif and his Russian counterpart Sergei Lavrov have underlined the need for a peaceful settlement of the Syria crisis through political means, Press TV reported on Friday.
In a telephone conversation, the two ministers condemned what they called "use of chemical weapons by terrorists" in Syria.
They also expressed "deep concern" over the escalation of tensions in the Arab country, according to the report.
On Thursday, Zarif dismissed claims that the Syrian government has used chemical weapons against civilians.
The main Syrian opposition group claimed that the Syrian government used chemical weapons on Wednesday and killed as many as 1,300 people. But Damascus denied the accusations.
Iran is a main ally of the Syrian government in the region and has encouraged the Lebanese Shiite Hezbollah to fight on the side of the governmental forces against the opposition groups, which it considers as "terrorist groups."