who called for attacks against all in the anti-isis coalition, that includes the u.s., uk and australia. since then police have traced the shooting of a canadian, a hatchet attack against police back to fatwa. when you look at this, lone wolfs exceptionally difficult to police and prevent because they're radicalized on their own. plus they plan and carry out attacks on their own, taking advantage of the vast trove of information on the internet, a favorite video is "how to make a bomb in your mom's kitchen." they also don't enter the country from abroad where they might be collected by immigration as they come in and they don't have any co-conspirators that they're communicating with. of course, the trouble here is that this assailant in australia did have a history. the challenge for police is