Considering their ideology and the freaky fervour with which they adhere to it, the only way to eradicate them may be to wait until religion is no longer something people believe in. Because the other option is to make Islam illegal and that certainly won't go over well.
Until then, suppression and defense might be the only options. Eradication is unlikely through violent methods given that Islam approves and exhalts such violence.
Until then, suppression and defense might be the only options. Eradication is unlikely through violent methods given that Islam approves and exhalts such violence.