"Russia always maintains a balance between the East and the West. We always rely on [Russia]," Ourouj said.
He expressed hope that Russia would continue to play a truly important role in the negotiations and relied on the country's assistance.
"It will not be an exaggeration to say that Russia is our only hope," Ourouj said.
The January 26-27 stage of the talks envisages meetings between opposition groups, while the January 28-29 stage will be used to hold negotiations between the Syrian opposition and a government delegation.
On Monday, Syrian President Bashar Assad said that the Moscow talks should be treated as preparation for the conference to settle the Syrian conflict.