Over the course of the last three days Syrian rebels suffered their worst defeat in four years as forces loyal to dictator Bashar al-Assad managed to sack a third of eastern Aleppo. At least 500 people have been killed and 1,000 more wounded as Russian and Syrian warplanes pounded the city from the sky while a consortium of Syrian soldiers and Iranian-built militias stormed it on the ground. The assault came from east and west in an apparent effort to bisect rebel territory, which is already geographically isolated from the rest of the province.
http://www.thedailybeast.com/articles/2016/11/28/assad-strikes-back-in-aleppo.html