Syrian rebel-held areas fear attack
7 December 2012 Last updated at 22:40 GMT
Activists in Syria say government forces have reinforced their positions in the suburbs of the capital, Damascus.
There have been clashes around the city in recent days. The opposition says it is increasingly fearing a ground attack on rebel-held areas.
The BBC's Middle East Editor Jeremy Bowen is in Damascus where fighting has intensified in the last week.