Not sure you would.
If Assad's regime film and direct how they torture, kill, rape and kidnap civilians you'd definitely make no picks or favor one.
The only thing ISIS offer more than Assad's regime or Stalin for instance is like I said, you see and watch them doing it.
Well Assad is a saint when you have Stalin by his side, I haven't lived in CCCP long enough and this is not by my own existence, but unless ISIS and their barbarism is a myth, I would much rather live under tyrant then under the barbaric rule of maniacs of ISIS.
Not saying Assad is good, not at all, just as I'm not saying that Stalin was good. But from what I heard from my grandparents and read about it, it's much better then living under those fucktards ISIS.
Stalin killed hundreds of thousands, deported thousands, tortured many more probably and who knows how much more damage to human life he did, but what is happening under the ISIS rule is so fucked up that it's unimaginable in this day of age. It's going back to prehistoric's dark age but with todays weapons.
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Anyway on topic, what are the main forces in ISIS army?