TEHRAN (Press Shia Agency) – Russian Defense Minister Sergei Shoigu said on Tuesday a Western failure to rein in Takfiri militants in Syria had indefinitely delayed the resumption of peace talks.

In remarks broadcast on Russian television, Shoigu said that rebels backed by Western governments had been attacking civilians in the Syrian city of Aleppo, despite a pause in Russian air attacks.

"As a result, the prospects for the start of a negotiation process and the return to peaceful life in Syria are postponed for an indefinite period," Shoigu said.

There have been multiple diplomatic pushes to put an end to the conflict in Syria since it erupted in 2011 but all have ended in failure.

The conflict in Syria, which flared up in March 2011, has claimed the lives of more than 400,000 people, according to an estimate by de Mistura.