IMHO the exiled jordanians don't care for their lives (children incl). What they care about, what makes them hurt, is land. The IDF should outright annexe a certain amount of West Bank land (say 5 acres) for every Israeli citizen that dies from terrorism and/or suffers injury (incl those citizens of Arab/Jordanian ethnicity -and there are a lot).
When the leaders realise that the trade of life for land (permanent transfer) means that every terrorist act means they paint themselves into a smaller, more desperate, more uncomfortable, more miserable, more despairing corner, they may opt out of this losing game. Land is all they respect. Even if it is fit for goats only.
The perps should forfeit land for Israel's blood.