Syria's main opposition group is considering a proposal by UN special envoy Staffan de Mistura that could pave the way to the delegation pressing ahead with talks after holding their first meeting with him on January 31, a Western diplomatic source said.
Representatives of the Saudi-backed Higher Negotiation Committee (HNC), which includes political and militant opponents of President Bashar al-Assad, had warned earlier in the day that they may yet walk away from the Geneva talks unless the suffering of civilians in the five-year conflict is eased.
With Islamic State bombers killing over 60 people near the country's holiest Shi'ite shrine, the Syrian government's chief delegate retorted that the blasts in Damascus merely confirmed the link between the opposition and terrorism - even though Islamic State has been excluded from the talks.
The United Nations is aiming for six months of talks that would focus on achieving a broad ceasefire, while working toward a political settlement to the civil war that has killed over 250,000 people, driven more than 10 million from their homes and drawn in global powers.
After the HNC initially insisted air strikes and sieges of Syrian towns must end before it joins the "proximity talks", in which de Mistura would meet each side in separate rooms, there appeared to be some signs of a softening in their position on January 31 evening.
HNC spokesman Salim al-Muslat described discussions with de Mistura as very positive and encouraging "concerning humanitarian issues." The delegation met for several hours later on January 31 to debate the proposal.
The UN special envoy's office said he would meet the Syrian government delegation on February 1 at 1100 (1000 GMT) and the HNC at 1700 (1600 GMT).
"De Mistura made them a proposition, and that's tempting them to enter the negotiations. They are very prudent," a Western diplomatic source said, adding he was not aware of the content of the offer.
The delegation representing the HNC is seeking a halt to attacks on civilian areas, the release of detainees and a lifting of blockades. It has a list of 3,000 women and children in Syrian government jails.
