Smoke billows across the Syrian-Turkish border as Syria's civil war rages on.<br/> <br />A constant barrage of gunfire can be heard in footage shot from Turkey's southern Guvecci village.<br/> <br />Other shots show watchtowers formally under the control of Bashar al-Assad now flying the Free Syrian Army's colours.<br/> <br />Although Syrian rebels are divided, the government has been unable to land a decisive victory against the fighters in key cities.<br/> <br />But the conflict has spilled from Syria's borders into Turkey after a series of mortar attacks hit Turkish cities, including one incident that killed five.<br/> <br />This has led once-ally Turkey to retaliate with several rounds of shelling throughout last week and over the weekend.<br/> <br />On Sunday, the border towns of Reyhanli and Salqin returned to calm in the wake of clashes the day before.<br/> <br />Truck drivers in the area said they now felt safe delivering goods on the Syrian side since several border gates are under rebel control.<br/> <br />The ongoing Syrian conflict has claimed the lives of 30,000, according to the United Nations, with no end to the violence in sight.