the most recent attack on sufi muslims, caught the christians targeted in the past. what is it about this region that makes it seem like such a hotbed for these extremists? >> this is a very good question because north sinai has witnessed an insurgency for the past more than a decade. so you have a very complex of insurgency which has escalated after 2013, after the topping of the muslim brotherhood president by the egyptian army. and the past, you know, since 2013, thousands of people have been killed. you have strategic attacks not only against is civilians, but even against the security forces. this is the beating heart of the radicalized insurgency that basically has taken on the ideology of isis since 2014.