Gun battles on the streets of Deraa as the battle for control in Syria moves block by block.
Amateur video, which could not be independently verified by Reuters, appears to show rebel fighters trying to hold their ground.
More footage appears to show a government checkpoint in flames.
Along a highway rebel forces try to establish their own checkpoint.
What started as a popular uprising in March 2011 has descended into a civil war where the front-line can be anywhere.
Once bustling streets are now barren and broken.
Smoke on the horizon is increasingly a common sight.
With world powers at odds over how to address the crisis -- the losses mount --in a conflict that has already cost more than 70,000 lives.
