The United Nations urged Russia, Iran and Turkey on Thursday to open up areas of Syria to the delivery of humanitarian aid in "de-escalation" zones whose parameters the three are meant to finalise.
The three countries brokered a deal in the Kazakh capital, Astana, in May to create four de-escalation zones in Syria. Russia said on Tuesday that the next round of negotiations in Astana was likely to be held in early July.
Jan Egeland, U.N. humanitarian adviser, said that U.N. technical experts were joining officials from Russia, Iran and Turkey in Moscow at preliminary talks that began on Thursday.
A Western diplomat told Reuters the two-day talks are to focus on setting GPS coordinates for the de-escalation zones.
Egeland, asked about his hopes for the Moscow meeting, told a news briefing: "That the de-escalation reaches a place like (the southern city of) Deraa, which is supposed to be a de-escalation zone but rather has been an area of increased fighting."
The United Nations had received an appeal from the Deraa provincial council describing "intensive bombardment of (rebel-held) Deraa city, including the use of barrel bombs", he said.
The Deraa region of southwestern Syria is split between rebel- and government-controlled areas.
Fighting has lessened in the northwestern Idlib region and in eastern Ghouta in the Damascus countryside, Egeland said, calling for using that window of opportunity to open up humanitarian access.
He said he hoped that the zones, in which some 2.5 million people are expected to live supposedly safe from harm in Syria's civil war, "will indeed become not only de-escalation zones but free humanitarian access zones", as spelled out in the Astana memorandum.
Russia, Iran and Turkey are trying "to agree on exact delineation of the zones," Egeland said.
"We have been invited to observe the (Moscow) meeting. We will certainly use any opportunity to tell them that we need free, unimpeded access and we certainly do not need a more bureaucratic system. We need an end to this red tape system that is keeping (humanitarian aid) away from many populations."
"We hope for white smoke from Moscow and Astana again soon."
Egeland said he expected U.N. aid convoys to arrive later in the day in hard-to-reach areas in Homs and Hama, and in besieged areas of eastern Ghouta at the weekend. It had been 40 days since the United Nations last reached any of the besieged areas where 680,000 people are trapped, which was Douma in May.
The Syrian government has given the United Nations permission to get aid to the Kurdish-dominated city of Qamishli by truck, the world body said on Wednesday.
"We're hopeful that we will able to reach that place very soon now, within hours, hopefully," Egeland said.