"It has nothing to do with brain-washing. It is simple human psychology. The Koran gives would-be follower plenty of hooks to hang their hate and anxiety upon, and then tells them they are right for doing so, and also right if they destroy what they hate. Same as Mien Kampf."
Following that theory it would be important to have a steady stream of external enemies or that hate might turn on the leaders.
My point exactly.
We also see the same thing happening on our southern border with Mexican governments encouragement of La Raza, MeCha, LULAC, and other groups in this country. Indoctinate them into thinking we stole their land and send them north so they won't agitate for change at home.
It also helps that they have very strict gun control in Mexico (drug dealers and thugs excepted).