Faylaq al-Rahman includes between 8,500 and 10,000 fighters and is one of the factions of NLF, which was established in August with the support of Ankara in Idlib province and neighboring areas that fall under the control of fighting factions in Aleppo, Hama and Lattakia, he explained.
Hurras al-Deen, a smaller al-Qaeda-linked group, has also rejected the agreement and on Saturday, US-backed Jaish al-Izza terrorist group followed suit, saying it rejected the Turkish deal with Russian Federation.
The fate of an agreement between Russia and Turkey to set up a demilitarized zone in Syria'sIdlib hangs in balance with Turkish-backed militants refusing to withdraw and opposing the deployment of Russian troops.
The confusion has already played out on the ground, with the NLF and Faylaq al-Sham denying reports on Sunday that they had pulled heavy weapons from the planned zone.
But observers have pointed out its implementation would be tricky for Ankara.
Hayat Tahrir Al Sham has yet to announce its position on the agreement, and there have been no signs it was moving out either fighters or heavy weapons.
Hurras al-Deen, a smaller Al-Qaeda-linked group, has rejected the agreement.
"We are against this deal, which eats into liberated (militant-held) areas and bails out Bashar al-Assad", its head Jamil al-Saleh told AFP.
Seven years of war have forced more than half of Syria's people into exile or left them internally displaced.
The foreign ministers met on the sidelines of the United Nations General Assembly, Russian news agency Tass said.
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