Sageman’s “bunch of guys” theory has really won out now that anybody can interact with terrorists on social media. You can’t run a big terrorist organization made up of people seeking revenge because they’re power-seeking and will replace you. Instead you take a bunch of guys out of college, give them a way to seek status that conveniently involves them dying before they can replace you, and then go out and fundraise.

We can’t extrapolate 9/11 to all instances of radicalization but exclude Israel.