I'm trying to empathise with them... I get why people become radicals of other kinds... but saying no music, no sex, live by the book, behead those who disagree... what part of that makes people think "I want to get into this, this sounds fun"?
The Arab world has valid grievances, which motivated 9-11 for example, but there's more to it than that.
there were? If it was the US I'd say FBI entrapment but idk about EU
yeah I remember at least 5 different cases of Germany teens escaping their homes and ending up as ISIS fighters/wives
https://edition.cnn.com/2019/02/12/middleeast/german-isis-wife-grm-intl/index.html
I don't know if that's a lot; in a country of ~80 million you'll always have a handful of people doing the weirdest shit imaginable.