'Some of the terrorist groups linked to Daesh are involved in the (Riyadh) talks, Deputy Foreign Minister for Arab-African Affairs Hossein Amir-Aabdollahian said, according to Fars News Agency.
'These terrorist groups will not be allowed to decide Syria's future,' he stressed, referring to the meeting on Thursday on future peace talks with the Syrian government.
'We do not approve the Riyadh meeting ... It is not in line with the Vienna talks,' Amirabdollahian said in reference to the process which envisages formal talks between the Syrian government and the opposition by January.