Rockets fire in the Syrian city of Deraa.
Reuters cannot independently verify the contents of this video, which claims to show government forces firing a barrage of rockets at Syrian rebels.
More footage appears to show a rebel fighter firing at government forces in Aleppo.-- A city once the country's commercial hub where some districts are virtually hollowed out.
Rebel forces have reportedly made gains near the southern city of Deraa and control a considerable amount of territory in Aleppo in the north.
Human rights groups say at least 25 people were killed in the fighting -- in a war that has already claimed the lives of more than 160,000 people.
