ME Islamist are so paranoid they primarily trust only family members. Their inability to work in a trusting fashion outside of family groups hurts their efforts in terrorism and nation building. It might be part of the reason they're violent and ineffective. Part of UBL's power came from being one of about 50 kids - with many relatives, in a large, wealthy family.
Thanks for the input GOPJ. I'm not sure, in some families, that they can even trust other family members.