I don't think anyone doubts that Blair will respond to this with swift, unmerciful fury. His reputation preceeds him on matters of national defense.
This is a little off-topic, but there's one person who could benefit from a strong, public response...Prince Charles. He could redeem himself immeasurably in the eyes of his countrymen by standing beside Blair, endorsing a tough response and sharing the duty of visiting hospitals, attending funerals, etc. I've always thought his was a wasted role with his squishy choices of causes. He has an opportunity here to present himself as a bold defender of England...we'll see if he takes it.
I hope he does. Let's hope Parliament backs him.