Syrian freedom fighters shot down a Russian-made Assad's warplane in the eastern province of Deir Ezzor and captured its pilot on Monday.
They posted videos on YouTube of the jet being downed, and then another of the plane's pilot giving a statement.
On the outskirts of Damascus, the capital, shells struck liberated strongholds from before dawn on Monday.
More than 45 people, including 36 civilians, have been killed by the bloody Alawite regime in the past 48 hours in the area.
Alawite security forces arrested at least 21 peaceful Muslims as they raided houses and shops in the center of Damascus on Monday. Alawite armed forces had broken down the doors of shops that had closed in a show of defiance against the Assad's regime. The raid was the biggest operation of its kind in the city since the launch of the uprising against Assad's regime in March last year.
This is not the first time there have been raids in central Damascus, but this is the first time something like this has happened on such a large scale. Bloody Alawite security forces also swept into a graveyard under the pretext of searching for weapons. Several houses had been burned by Alawites in Basateen al Mezzah, in the capital, and that there were additional clashes in the outskirts of Damascus outskirts, where freedom fighters were able to destroy some heavy Russian-made military vehicles.
Fighting also raged in the city of Aleppo, with freedom fighters seeking to establish a strategic foothold in the north. Clashes were reported in the southwestern district of Salaheddin. On Sunday, communications of all forms were cut in most of Aleppo city and its suburbs.