and that was reiterated in the isis magazine was to say, attack the infidels wherever you are. use trucks, use cars, use knives, use any means and then we started seeing these kind of so-called lone wolf attacks after that admonition by niane. this is similar to the nice attack with the tunisian isis affiliate member who mowed down people. this is very reminiscent of that. and i think that s something that certainly law enforcement is looking to deal with, because it is a much, much harder problem than defeating isis on the ground and iraq and syria and trying to interrupt these so-called lone wolves around the world who are taking it into their own hands. and keir simmons, also, in new york, let s talk about how how americans should react in this kind of situation. and other tourists from around the world.