UN Secretary-General Ban Ki-moon is determined to push ahead with peace talks between the Syrian government and opposition despite the lack of progress during two rounds of negotiations that ended on the weekend.
"This is the start of an enormously complicated process after three years of conflict," UN spokesman Martin Nesirky said. "It should not really surprise anyone ... that the parties have found it difficult to find a common voice.
"This is a process, not a single event taking place in one or two meetings ... this is going to take a long time."
He said Ban and UN-Arab League mediator Lakhdar Brahimi were in contact with the United State and Russia on how to proceed.
Nesirky said Ban hoped the parties would "think long and hard" and come back to Geneva as soon as possible to continue the peace process.
Brahimi said on Saturday he was "very, very sorry" after the talks between the Syrian regime and the opposition broke off without result after three weeks. No date has been set for a resumption of negotiations.
Associated Press, Agence France-Presse