This is only two. There are many thousands of others.
It’s not over. Not even close.
The Chechens have a lot of oil money which they use to send their kids here to live the high life. Not all are radical Islamists but I’m sure some are. It’s probably pretty easy for someone to pull the trigger since the one I just found out about (during a discussion of Boston) has no skills. That means he is utterly reliant on the money stream and whoever controls the money can control the kid.