The events of September 11th have brought a sobering reality to many Americans, most of whom have never lived or even visited the Middle east. Israel has a simple and effective approach, "You DO NOT negotiate with terrorists". It makes no sense to be passive and "hope" people who do these things will not harm or even keep their word to not harm anyone.
God said to Abraham, "And I will bless those who bless you, And the one who curses you I will curse."