ettore, just five minutes ago read big praise post at LJ about Israeli security at airports... And immediately after that one which criticized it and demonstrates how's its all is just money laundering (government subsidies stealing)
What I mean, it's usual standoff of armor and bullet. Also note that bullet needs only one chance of numerous to succeed (like old joke of probability to meet crocodile in the center of Moscow - it's 1/2, because you either meet it or don't) and at the same time armor which prevents other 999 of bullets will be treated as failed.