I remember that meeting. Blair is not a man who takes political risks lightly, which is the strongest reason to believe that he must know something that he feels compelled not to share. It makes the desperation that he and Bush share about removing Saddam, all the more comprehensible.
One thing you must remember is that Clinton ran down American intelligence assets to ridiculous levels - so it is not surprising if Blair showed Bush something that Bush didn't know. For example, on 9/11, America had no intelligence operatives in Afghanistan. Not one. MI6, fortunately, did.
When Bill Clinton is going to be tried for treason is another matter.
Regards, Ivan
Excellent point, Ivan, I hadn't considered the intelligence situation. Blair might have had the intelligence for some time, and 9/11 may have given him the opportune time and an attentive audience.