Why do you think Israel has survived all these years ? It is ONLY due to the fear that it has instilled in its hostile neighbors about what the repercussions of attacking Israel could be. And it has to keep up the fear perception by making sure that any kind of violence against it, is dealt with a firm (sometimes disproportionately so) hand.
Do you think the fear actually comes from air riads on civilian targets or few tanks that can virtually paralyze the palestinian state? Or from the pics of killed children? These attacks instill hate not fear.
The fear comes from Israels alliance with USA.