Daddy has been here for some 20 years, lives in a beautiful house, travels to the WH to meet with State Dept. people - and has to speak his piece in Dari? That should tell you all you need to know right there.
The son was clearly somebody with problems, but no doubt a lot of them stemmed from Islam, which is a bizarre cult that represses normal emotional and sexual activity between men and women and instead directs men into homosexuality or even bestiality and kills women for looking attractive. Add that conflict, and a domineering, anti-American jihadi father, and we've got a problem. I read a very good article once about how this bizarre attitude towards sex and relationship, which is compounded by polygamy since that means that there simply aren't enough women to go around unless you steal them from the neighboring tribe, builds up this huge, conflicted resentment among young males. And boys are routinely sexually used by older males, adding even more anger to this. Also, the first person who is given the "right" to the young male is...his father.