Gun battles on the streets of Deraa as the battle for control in Syria moves block by block.<br/> <br />Amateur video, which could not be independently verified by Reuters, appears to show rebel fighters trying to hold their ground.<br/> <br />More footage appears to show a government checkpoint in flames.<br/> <br />Along a highway rebel forces try to establish their own checkpoint.<br/> <br />What started as a popular uprising in March 2011 has descended into a civil war where the front-line can be anywhere.<br/> <br />Once bustling streets are now barren and broken.<br/> <br />Smoke on the horizon is increasingly a common sight.<br/> <br />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.
