Indeed it is on Iraq that Tony Blair has the most to do in reassuring the public. The likely recall of Parliament is a valid first step, in part because of the sense of empowerment it would give people for their representatives to have a say, and in part because eschewing this course means he risks appearing undemocratic.
So it is a necessary first step, but alone it is unlikely to sate public fears. Blair needs to go out and win that argument face-to-face in town meetings, in local media outlets, even door-to-door. He should consider this a mini campaign for public confidence - and if he is to convince, it's time to get back on the battle bus.