"I remember when we adopted this resolution [on September 9], [US State Secretary] John Kerry declared that those who want to be part of the settlement must break with terrorists immediately," Lavrov told reporters on a visit to Greece.
"These are golden words, and we still hope that they will come to life and will be confirmed," the diplomat said.
He added that the UN Security Council had also adopted a resolution aimed at settlement of the Syrian conflict, following the talks within the framework of the International Syria Support Group (ISSG), co-chaired by Moscow and Washington.
"The resolution stipulates immediate start of political negotiations without preliminary conditions, easing of a humanitarian situation, which is critical in many Syria's regions and stipulates an uncompromising struggle against terrorists. And the opposition groups, who want to participate in the process of political settlement should break their ties with the Islamic State [ISIL or Daesh] and the Nusra Front, to separate from them," the minister said.
Fighting in the northern Syrian city of Aleppo has escalated in recent months with the Syrian army and local militias having managed to encircle large groups of militants in eastern districts of the city. Government troops began to advance after the recent ceasefire collapsed. Washington has accused Moscow of failing to prevent the advance, while Russia stressed that the United States failed to fulfill its commitments on separating terrorists from the so-called moderate opposition groups.
