Under islam for most life is so joyless that they welcome death. But the killing of their entire families thus eliminating them from the gene pool does scare them. The Bible calls it cutting one off.
A Jewish Officer showed me a map one evening and told me how Israel would cut the seed, and make their lands uninhabitable for 10,000 years. Essentially, one nuke or an invasion of Israel will result in a grid-square type nuclear coverage of the lands of Cain and the Muslims.