The Russian Defense Ministry has said that the US support for terrorist factions in Syria is the main obstacle to the anti-terror fight in the war-torn country. This reported by Sputnik.

"The main obstacle to the complete elimination of Daesh in Syria is not the military capabilities of terrorists, but rather the support of [our] American colleagues," Russian Defense Ministry spokesman Maj. Gen. Igor Konashenkov said Wednesday.

He went on by saying that a series of Daesh attacks against the Syrian forces have been carried out from the areas where "US military mission" is deployed.

On September 28, a group of 300 Daesh militants left the city of Rubkan moving in direction of the city of Al-Qaryatayn in the Homs province. The militants managed to avoid Syrian army's hidden posts using coordinates that can only be obtained through aerial reconnaissance and attacked Syrian positions. On the same day, another Daesh group conducted a number of attacks against the Syrian forces along the strategic road connecting Palmyra and Deir ez-Zor.

"The listed attacks of terrorists are linked by only one thing — they were all carried out from a 50-kilometer zone around the settlement of al-Tanf on the Syrian-Jordanian border, the very one where the 'US military mission' is located…," Konashenkov added.

Konashenkov also said that the defense ministry had warned the United States it would repel any attacks by terrorists from the zones controlled by the US forces.