UN special envoy for Syria Staffan de Mistura said on Tuesday Russia, Turkey and Iran were closing in on a final statement reaffirming a cessation of hostilities between Syrian warring parties.
"We're working for a declaration that can reassure the actual cessation of hostilities to become more solid," he told reporters. "This is not a paper, but a cessation of hostilities and saving lives. We're not far from a final declaration."
Diplomats said there was a nuance in the language being used with the Syrian government opposed to the use of the word ceasefire as opposed to cessation of hostilities.
A second day of Syrian peace talks have started in Kazakhstan's capital of Astana, amid talk of an extension of the originally two-day talk to settle the Syrian conflict after six years of war.