How do you destroy an ideology with bombs?
What else can we do? Putting the kettle on and inviting them around for a chat ain't going to work is it? If we leave them alone they'll continue to rape, murder and pillage where ever they manage to get to.
I have already stated the way we deal with ISIS and the middle east, we stay out of it and let Iran and Syria deal with it..Iran is the leading military power in that section of the middle east - the majority of the people there are shia. They coulda wiped out ISIS already but we refused their help, we insisted on letting the iraqi army attack ISIS and they got a hidding, Iranian generals are now more involved but we need to let them deal with altogether, it would be over in weeks.
Then to ensure that young Muslims don't feel the desperation that drives these insane groups we reverse our policies in the middle east because they are horrible.