ground assault on eastern aleppo. >> they broke through rebel lines and entered into two eastern neighborhoods over the weekend. fred planken on more from london. >> reporter: these are arguably some of the most significant gains that syrian government's military forces have made at the civil war that the civil war has been going on. eastern aleppo for both the syrian government as well as the opposition is one of the main battle grounds in the civil war. it's the last urban strong hold where the rebels actually still hold a significant amount of territory. the rebels want to defend it almost at all costs and the syrian government and allied forces include iraqi shiite fighters and iranians want to take it at all cost. and that's why you see a major bombing campaign. 46 people killed in aleppo and the surrounding areas on