A would be suicide bomber...

No they haven't, but the point is deterrent against homicidal barbarians. You can't kill a suicide bomber, but you sure can kill his family. Families of these bombers get money from terrorists for their kids blowing up other peoples kids. Beside, collective punishment is legal under frontier crime laws. This would just be taking one step forward.

BTW, likes of you are quick to condemn this as brutality, but I have yet to see you condemning Taliban savagery. If we're going to defeat terrorists we have to act like terrorists too. All arrested terrorist must be beheaded on camera...just like what Taliban do to their captives.