AlDorar alShamiya polled some commanders in Fath Aleppoa and Jaish alFath concerning the reasons that Aleppo battle lost its strenght.
First : regime knows very well the operation room strategy and has adjusted to it. The lack of reservists who may resume the process and defend the gained areas is the real reason.
Second: RU AF did not leave the sky since the first day of the battle.
Source: The full article: http://en.eldorar.com/node/3720
The full article in arabic : http://eldorar.com/node/105421