To my mind the blame for the murders in Paris lies solely and unambiguously with the seven men who last Friday night made the decision to pull the triggers and detonate the bombs that killed people so desperately unfortunate as to be in those randomly chosen places at that particular time - soft targets for men full of rage and hate.
Their backgrounds, the circumstances of their lives, do not lessen their personal guilt or dilute the fact that their actions were as a result of choices they freely made.
They were not driven to this by the people they murdered, they were not driven to this by their environment, they were not driven to this by intolerable cruelty, injustice and torture at the hands of the French state.
I can only suppose that like all fanatics simply observing a faith was not enough for them - hatred of humanity, lack of empathy, rage at their own impotence I would suppose to be the motivating factors that spurred them on.
I regret that they did not live to spend every day for the rest of their lives in solitary confinement forced into contemplation of the horror, terror, destruction, trauma and pain that they inflicted on individual people, not some faceless state or idea of what that state represents.
As for what to do to prevent more attacks - I don't know.
I understand that a display of military might versus ISIS would be seen as attacking the heart of the darkness but would it really wipe them out?
Would it involve even more death and terror being inflicted on innocent civilians, more people displaced?
I think it would.
I'm inclined to think that the best course of action is to root out and neuter the cells here in Europe, zero tolerance for those suspected of being involved or for people who support or protect them.