1647 GMT: Guardian, reports that the fighting may only be 3-4 kilometers from the international airport in Damascus:
Rebels and activists said the fighting along the road to Damascus airport, southeast of the capital, was heavier in that area than at any other time in the conflict.
The Syrian Observatory for Human Rights, a opposition monitoring group, said clashes were particularly intense in Babbila, a suburb bordering the insurgent stronghold of Tadamon.
Nabeel al-Ameer, a spokesman for the rebel Military Council in Damascus, said that a large number of army reinforcements had arrived along the road after three days of scattered clashes ending with rebels seizing side streets to the north of it.
"There are no clashes directly around the airport; the fighting is about 3 or 4 kilometers away," he said via Skype, adding that rebels had taken control of many secondary roads and were expected to advance towards the airport.
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