It is sad that you had to resort to ad hominum thereby nullifying anything that you say rather than think things through.
Was I frightened? Nope. However, this is a group that wants to be a NATION. This is supposed to be a state. Now, they take a journalists, capture him, torture him for multiple years and then in the end, saws off his head. Frightened? No. However, a nation that would BUTCHER somebody like this, would be universally condemned.
In addition, ISIS has shown that they will BUTCHER anybody that they differ with. It is NOT terrorism that they are practicing. It is genocide. They intend to purge Iraq and Syria of all ppl that are NOT Christian. They blame them for everything. THis is really no different than when Hitler blamed the jews (yeah yeah, godwin and all).
In addition, as I have said elsewhere, I do not believe that our going back with troops will be useful. WHy? Because this has gone on for centuries. But, to want to stop this does not make a person frightened. It makes them sane. And capitulating to them like Britain did to Hitler, will only make them aggressive.