Moscow, SANA-The Russian Foreign Ministry said Riyadh-backed opposition left the Syrian-Syrian talks in Geneva due to the successes made by the Syrian army on the ground.

“The reason behind such a harsh step of the so-called Riyadh group is that the Syrian army has made serious success over the past days in the north of the Aleppo province,” Russia’s Foreign Ministry official spokesperson Maria Zakharova told reporters on Thursday.

As a result of the successful operation of the Syrian army and allies, the terrorists were cut off the supply routes between the north of the Aleppo province and the Idlib province. “This was a serious blow for terrorists and those who are their accomplices and sponsors,” she added.

The Syrian army, backed by popular defense groups, has recently broken a long-time siege of Nubbul and al-Zahraa towns in Aleppo northern countryside after restoring security and stability to vast areas in their vicinity.

Zakharova said Russia is cautiously following up the distribution of humanitarian aid in Syria but warned of terrorists benefitting from this aid in their terrorist activities.

Meanwhile, Ankara has not provided a single piece of evidence Russian planes violated its airspace, Zakharova said.

“None of the planes from the Russian air group in Syria has violated the Turkish border,” she said. “Ankara has not yet provided any facts to back up its charges. There have been no replies to direct requests from the embassy to provide such information, either.” Similar queries addressed to NATO are ignored, as well.

According to the diplomat, Turkey covers up its military activity on border with Syria by accusing Russia.

“It seems that all ungrounded accusations in regard to the Russian Aerospace Force are voiced by Ankara in order to find an excuse or maybe use it is a cover for stepping up its military activities in the area of the Turkish-Syrian border,” the Russian diplomat said.