MOSCOW - Tehran backs Russia's efforts to host a new round of peace talks between Damascus and the Syrian opposition, Iran's deputy foreign minister said on Wednesday during a visit to Moscow.Russia and Iran have sided with President Bashar Assad in the conflict in Syria, where three years of fighting has killed some 200,000 people, while the West backs some of the rebel groups seeking to oust him.Russia, increasingly isolated over another conflict in Ukraine, has stepped up efforts to restart peace talks on Syria and hopes a meeting between the rival sides could be held in Moscow as soon as in January."We support Moscow's idea of holding a meeting between representatives of the (Syrian) authorities and Syria's moderate opposition," Hossein Amir-Abdollahian was quoted as saying on Wednesday by the Russian news agency TASS.Russia has not specified which opposition groups it thinks should be represented, one of key issues of contention in the past. Though Abdollahian said Iran would not be part of any such talks, he shed more light on the allies' thinking."Only representatives of the opposition that believes in political settlement and which is not armed should be invited. These representatives should have some sort of a base within the Syrian nation," Abdollahian said, echoing the official Syrian position.