They don't fear death. They fear not being able to reach paradise. Their weakness is not that complicated.
I fail to understand your point.
1) I stated they do not fear death. I assume you are agreeing with me?
2) Explain how fear of not reaching paradise can be exploited if Mecca is bombed (or threatened danger). In such an instance, according to the twisted belief of the extremist, this would result in the promised paradise. Whereas Refusing to sentence them all to an early death and Global Jihad by virtue of releasing atomic weaponry to carpet the Middle east, would result in denial of their dream of numerous virgens in heaven.