For your information, France and several other countries have declared war on ISIS and are bombing them, and their wives and children??, every day. We are at war with them and they fight back in the only way they know how, which is terrorism, not that much different from the terrorism of having bombs rained down on your heads day in day out. I am in no way justifying the attacks, or claiming any validity to ISIS' extreme reality, I'm just pointing out for those of you asking WHY??? We are at war with them, we somehow consider bombing the hell out of people to be just, and they are at war with us and they somehow consider killing civilians and blowing themselves up to be a just war or Jihad. If we are going to fight people that think that way, its only likely that they are going to have some victories in battle, when most of the victories from our side (bombing ISIS) are considerably more deadly in numbers killed.