Videos uploaded to social media purport to show the aftermath of Russian airstrikes in Deir al-Zor, Aleppo and Damascus on Monday (December 7).The first video appears to show debris and damaged buildings in the eastern Deir al-Zor province. The airstrikes are said to have been undertaken by Russian forces.Syria's ally Russia is waging an air campaign in support of the Assad regime, and has been striking in Deir al-Zor.Russiatarget="_blank"'>The more than four-year-old war shows little sign of slowing across the rest of the country as heavy fighting continues and all the world's major powers except China are all now militarily involved.