There is nothing new under the sun.
At one stage my Sunday School class was looking into the fall of Jerusalem to the Romans in AD 70(?) We were reading from a translation of Josephus' account.
The Romans had the city besieged and were calling on the inhabitants to leave the city and surrender. The religious zealots inside the city were killing anyone they caught attempting to escape.
This whole situation in Mosul is destined to be a disaster, but I think it must be done. My heart is heavy at the thought.