What these terrorists want is to be relevant - their biggest fear would be to slip into irrelevance.
Abbott's approach just gave them their fame he put it on a pedestal - I don't think it scared ISIS at all the people it did scare is the general population exactly who they were aiming it at it and look at who they made the messenger for their fear mongering.
The strong approach is to take action behind the scenes without all the airplay & not grandstand them.
