More than 30 Syrian temperate rebel groups led by the "Free Syrian Army" have signed a statement saying that the escalation of bombing with participation of the Russian aircraft in Aleppo renders meaningless further political negotiations, reports BBC.
In a statement, the forces released in Amman, said that in recent days as a result of an unprecedented campaign of air strikes were killed dozens of civilians.
Under these conditions, groups with the support of Turkey, the Gulf and Western countries, consider the process of negotiations, which are conducted under the auspices of the UN with the participation of the United States and Russia, meaningless.
The statement also indicated that the insurgents can not agree to Russia's role as a sponsor of the negotiations, because it is an ally of the Assad regime, which is committing crimes against its own people.
The opposition accuses Syrian army, based on Russian support in the use of napalm and chemical weapons.