Now that it is their throat that will get cut, they are going in with zero concern for collateral damage.
Tikrit will be flattened and Mosul will be flattened. The only things left standing will be due to a lack of ordnance.
The Shia don't give two craps, how many Sunni they kill.
Does the “government” have enough arty to do that? I’m sure they don’t have enough air power....