Ok, here is a thought, seeing these terrorists like to claim responsibility, as in, they like to get the glory so to speak, how about passing law that if anyone like this cleric Abu Saad openly adopts responsibility they are then accountable, so arrestable and convicted of terror attacks?
If i went on national television saying, yeah it was my mates who killed whoever, your damn sure i would be in a Police cell quicker than you can say, beaten with a truncheon
Would any of these clerics want to speak out if they were held accountable?
Good luck capturing them...