It is religious:
Syrian are divided into two big groups:
1-Aliwites, Shia, Christians, Atheists, liberals, Druze and moderate Sunni Muslims with the Syrian Army and Kurds are allies with this group or don't fight it
2-radical Sunni Muslims with the opposition (free Syrian Army.ISIS, Al Nusra etc)
Religious ... [he shakes his head sadly] Never fails, does it?
I lived in Syria during the war, had 9 near death experiences and got out when the sky started to rain missiles
Not just a ghost town but... I have to wonder what percentage of the buildings there are recoverable and what percent would have to be completely razed and rebuilt. My impression is that there is no part of Aleppo which hasn't been touched, indeed HAMMERED by that conflict.
I did my share in building Syria infrastructure during the war while the two sides were destroying it. until one day I was walking to work to fix the optic cable to restore the mobile telecommunication when two missiles hit one in front of me by 120 meters and one behind me by 10 metres.
There were lots of smoke, big hole in the ground and bombshells that shattered everything around me butI walked scratch free against all odds.