Syrian opposition figures met in Saudi Arabia on Wednesday (November 22nd) in a bid to form an overhauled delegation to peace talks, AFP reported.

The meeting comes as Iran, Russia and Turkey hold a summit in the Black Sea resort of Sochi, pressing their diplomatic dash to resolve Syria's six-year conflict with a new round of UN-brokered peace talks set to open in Geneva next Tuesday.

The Riyadh meeting is co-chaired by UN Syria envoy Staffan de Mistura and Saudi Foreign Minister Adel al-Jubeir, who said the aim was to reach a "fair solution" to the conflict.

De Mistura said the goal was to give momentum to next week's talks in Geneva by forging a unified opposition delegation, as long demanded by the Syrian government.

He said he would travel to Moscow on Thursday for talks with Russian officials.

"I am always optimistic... especially in this moment," he said.

Multiple rounds of talks hosted by the UN have failed to bring an end to the war in Syria, which has killed more than 330,000 people and forced millions from their homes.

Factions opposed to Assad have been plagued by divisions throughout the maelstrom.