Blame Bush and Blair for this?
These people were there already. They are either seeking power, or seeking to regain it.
They are people who shout prayers while holding knives to the throat of a terrified 18 year old, who came to them unarmed and defenceless to offer help.
They are people who mutilate and dismember bodies like disturbed children pulling the wings from butterflies.
They are Godless, merciless, inhuman savages. If not fought they will impose their monstrous regimes on all.