He said, 'Our Western partners know well that the situation in Syria cannot be normalized without removing the terrorists in Idlib.'

Ryabkov said that Russia had a positive attitude towards the fight against terrorism in Syria and that it was trying to minimize civilian casualties, adding that Russia has warned almost on daily basis against the use of chemical weapons by terrorist groups in Idlib.

In response to another question regarding the continuation of communications between Russia and the United States, he said, 'Yes, our communications have not been cut off, and we are in contact at both military and diplomatic levels.'

The Presidents of Iran, Russia and Turkey will talk in Tehran on Friday, especially on the issue of Idlib.

Russia has announced over the past two weeks its concerns about staging chemical attacks in Idlib by terrorist groups led by British intelligence services.

The United States has accused the Syrian government of planning to carry out chemical attack on Idlib and warned to react harshly.

US President Donald Tramp has warned Syria and its allies, including Iran, Russia and Turkey, against military attacks on Idlib.