Yes, I think the “missing ingredient” is the overwhelming hatred and loathing of Western culture and capitalism. This is only available in latent, meager, and a blunt form at home, but becomes a full-blown, pointed, activist, brainwashing experience in the Western schools.
Elite Western schools have become disseminators of anti-Western propaganda. Would it be a stretch if these schools also became recruiting grounds for anti-Western terrorists? Where did the Nigerian terrorist connect with his terrorist network? If more terrorists are recruited in the West than in Islamic countries, perhaps we should stop importing so many Muslims.
Exactly. Pol Pot learned everything that he knew about Communism at the University of Paris.