This is stated in the statement of the official representative of the Iranian foreign ministry Bahram Kasemi, which is published on the Foreign Ministry's website.
According to him, this agreement is an important step in promoting a political solution to the Syrian crisis.
"The meeting of the heads of Russia and Turkey and the announcement of the agreement reached regarding the circumstances of the settlement of Idlib's issue in Syria is an important and principled step in clearing the remnants of terrorists in Syria," the text reads.
September 17, Putin and Erdogan held a meeting in Sochi, which lasted about 4.5 hours.
The leaders agreed to establish a demilitarized zone in the region of Idlib, the Syrian province.
The State Department said that they welcome the efforts of Russia and Turkey on Syria.