1520 GMT: Fighting In Southwest Damascus. Reuters reports that despite rebel gains (described below) some of Assad's forces are well dug in, and have unleashed an intense rocket attack on Khan Alsheh:
An opposition campaigner in the nearby town of Jedeidet said troops stationed in hills overlooking Khan Sheih were attacking the area with multiple rocket launchers to try to dislodge rebels surrounding the barracks.
"I counted up to 20 explosions a minute on Khan Sheih," the activist, who uses the pseudonym of Abdo, told Reuters by phone.
A rebel commander in contact with the fighters said a force of some 1,000 insurgents had moved into Khan Sheih, which is 25 km from the Golan Heights, captured by Israel in 1967.