It's really clear the bombing strategy isn't sufficient. ISIS has 30K to 50K soldiers and we'd likely need overwhelming forces to counter that.
I mean, we need to retake cities they now hold and from which they recruit/conscript new soldiers.
The puppet "unity" government that Obama set up in Iraq recently is now begging for US troops to come to their rescue.
We'll see how it plays out, but it should never have come to this.