US Secretary of State John Kerry and Russian Foreign Minister Sergey Lavrov have agreed to meet later this month to try to set a date for a long-delayed peace conference for Syria.
The two politicians said on Friday that the successful resumption of peace talks depended on the outcome of the ongoing US-Russian talks aimed at securing Syria's chemical weapons cache.
Kerry and Lavrov met UN-Arab League envoy Lakhdar Brahimi in Geneva to discuss the potential progress of talks, leaving their teams of chemical weapons experts to thrash out a deal over the Syrian disarmament.
"We are committed to trying to work together, beginning with this initiative on the chemical weapons, in hopes that those efforts could pay off and bring peace and stability to a war-torn part of the world," Kerry told reporters at a news briefing.
The secretary of state said the meeting was likely to take place around September 28 to coincide with the annual UN General Assembly in New York.
Lavrov said Russia has supported the peace process from the start of the Syrian conflict but that "it is very unfortunate that for a long period the Geneva communique was basically abandoned".
After meeting Brahimi in Geneva, where they are trying to confirm a Russian plan to remove Syria's chemical weapons and avert US-led military action, Lavrov and Kerry said they agreed to try and make progress on a broader effort to end a conflict that has divided the Middle East and world powers.
Brahimi said working to remove chemical weapons from Syria would form an important element in efforts to hold new peace talks, following an earlier failed attempt at Geneva last year.
A spokesman for Lavrov said he and Kerry had a comprehensive meeting, where they outlined "the logistics, process and agenda for the days ahead and they agreed on a shared goal of achieving a framework for the path forward. The entire delegation will reconvene tomorrow morning."
Al Jazeera’s Neave Barker, reporting from Geneva, said that a deep commitment coming from both sides at this stage is "very diplomatic talk".
"They know it is going to be extremely hard to find common ground because there are so many clear-cut differences. Whether or not the Russia and US could work through these differences is yet to be seen, but if there is a breakthrough, it is going to have a major impact on the situation in Syria," he said.
Barker said the Russian and US plan is largely technical involving procedures to be able to share and collate whatever information both sides have on Syria’s chemical weapons capabilities with a view to, of course, pave way for potentially hundreds of international scientist to destroy Assad’s chemical weapons arsenal.
“And the hope is also that this will pave way for a greater diplomatic effort to kick start 'Geneva 2' talks that were stalled earlier in the year,” he adds.
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A statement from the US State Department, issued early on Friday, reflected the differing positions.
"Secretary Kerry ... made clear that while the United States felt the developments this week provided a positive opportunity, any plan must be credible, verifiable and implemented in a timely manner. And finally, there must be consequences for violation."
Assad is accused by the US of killing 1,429 people in a chemical weapons attack in a Damascus suburb on August 21, and threatens military strikes if a diplomatic solution to the crisis is not found.
Assad denies his regime was responsible for the attack, and pins the blame on rebel forces. Russia, Assad's ally, also says there is no proof that Assad ordered the attack and is opposed to any military intervention.
Damascus formally applied to join a global poison gas ban - a move welcomed on Friday by Russian President Vladimir Putin.
He called it "an important step towards the resolution of the Syrian crisis" and added: "This confirms the serious intention of our Syrian partners to follow this path."
China, too, hailed Assad's decision.
But Kerry underscored that Washington could still attack if it was not satisfied: "This is not a game," he said on Thursday.