If you read more history, you would know that the sorts of things ISIS is doing are actually what many armies have done throughout history. That it is considered criminal by some countries is the hiddush, but not a new one. Even in the middle ages, many people objected to such barbarity (not that they stopped it). ISIS is actually fairly normal for goyim. We’ve been “spoiled” by living in America.
The way Americans conquer countries by minimizing civilian casualties and helping the people they conquered is rather new and unusual (and note how the “left” is constantly denouncing the Americans).