Their "reasoning", as preached by the mullahs, is that they have not been aggressive enough in Allah's service, hence the terror war on the West. There seems to be no other introspection insofar as what their own faults might be.
Ignorance coupled with 24/7 propaganda from the mullahs produces the irrational hatred, IMO.
One sad conclusion is that there does not appear to be any way to communicate with these people, other than by force.