This all started centuries ago with the "Assassins", so named because they were high on Hashish when they went out to kill their targets.
These guys sound like the more 'chemically-enhanced' versions.
This is very true and very pertinent to today and this situation. These "people", the homicide bombers, are reduced mentally to the level of, dare I say it, "animals". WWI was started by an assassin from an Islamic organization know as the "Black Hand". Gabriel Princeps was as high as a kite when he shot Arch Duke Ferdinand and loosed the dogs of war.
I don't think the solution is the murder of a bombers family, but neither do I believe that the rational approach to the irrational is the rational solution.