That's irrelevant, extremists are extremists. If we hadn't got involved, none of this would have happened.
Regardless utterly pointless argument, as all we can do is not be as dumb as previously.
that is pretty dubious - 9/11 occurred prior to the the invasion of Iraq and frankly the arab spring happened organically - there is a good chance Iraq would have been fighting a civil war alongside Syria at the moment regardless... anyway the bomber in this case had a Libyan background/ancestry