Blair likes to praise the bravery of our troops on occasion. There are those who think this insincere but I disagree. It is often the case that those who lack a certain characteristic genuinely and sincerely admire those who have it in abundance.
He has sent others to their deaths but does not have the bravery to personally face the barrage of nasty words which might come his way in this debate. Perhaps he lacks a sense of perspective. Perhaps he thinks nasty words are more dangerous than the bullets and bombs he has ordered others to face.
I'm being facetious. It's not just nasty words. As has been obvious for a very long time now, Blair has gone to great lengths to avoid having to participate in an honest debate about Iraq. He clearly feels that such a debate would damage his reputation, his legacy and the length of his career. He undoubtedly considers putting those at risk a far more serious and troublesome undertaking than merely risking the lives of a few unimportant squadies or a few tens of thousands of Iraqis. It's a risk he's simply not prepared to take. The stakes are just too high.
He is, in short, a self-serving coward.