they used in the berlin attack in which the attacker eventually was killed by police but it wasn t a suicide operation formally at the beginning. so the fact that it s not a suicide operation i don t think invalidates isis claim of responsibility. it is quite likely this they inspired the attack. at least inspired but directed as well? i don t know. one of the two. at least inspired. michael weisma. the nightclub was frequented by a lot of high-profile crowd. was this a symbolic location that this guy was going offer? yeah. it s in a secular neighborhood of istanbul. you have a major holiday, which all jihadists call on each other to attack during the holiday season. this is the softest of targets. he killed one police officer outside. that s not much of a security