Syria activists: Tanks move towards central Damascus
Syrian tanks and troops are reported to have launched a fresh attack on anti-government activists in suburbs of Damascus.
These pictures were apparently taken in the suburb of Douma - they appear to show military vehicles on the streets.
The BBC cannot verify this video, but the images are consistent with reports from the area.
Activists said a total of about 60 people were killed on Sunday, with the government reporting at least 16 soldiers killed in two attacks by armed rebels.
The BBC's Jim Muir has been following events from Beirut in neighbouring Lebanon.