Olivia - The vast majority of deaths in Syria have been caused by aerial attacks carried out by the regime and their allies. Have a google of "Barrel Bomb" if you want more information about this.
I'd like to know which newspapers are claiming any other forces are engaged in widespread mass bombing of civilian areas. Have a google of "Homs" if you want to see what that bombing looks like.
Have a of "Caesar Syria" if you want to see what mass detention, starvation and torture look like.
Half of Syria's population have left, in what the UN is calling the worst refugee crisis since WW2. The refugees won't return while Assad is in power, because the vast majority are fleeing from him. Hundreds of thousands have died and are dying. This isn't like Iraq or Libya, it's worse and there is no end in sight.
There is no future for Syria under Assad. Does Homs and Aleppo look like they have a future to you?
Ask yourself if you or your family would be happy living in Aleppo now?
But spare me the glib, know-all shoulder shrugging when you clearly don't have a clue.