While it's always been a tactic of Islamist terror; relatively comfortable monied terror heads getting poor and stupid people to do their dirty work for them, we now have people from the west, from the UK flying over to basically get to 'play' at being terrorists. It does not help, and I will be attacked for this, that many come from relatively comfortable families where the domestic culture essentially treats them as entitled little princes by virtue of their sex. No one ever questions them, tell them know or calls them out on their self interested stupidity. When this whole sorry mess is over and any of them live to see it, they will be crying to their parents to get back home.
Actually, I've heard quite a few news stories (the latest one just today) about
girls trying to go to Syria or Irak to fight. That's quite surprising indeed.