I cannot imagine this scandal not bringing Blair down. This is the American equivalent of having Rumsfeld and Powell being ID'ed as the ones that revealed that Ambassador Joseph Wilson's wife was working covertly for the CIA.
Who exposed whistleblower's wife?
Julian Borger, Washington
Saturday August 9, 2003
The Guardian
A week after Mr Wilson went public, a conservative journalist, Bob Novak, published an article in which he wrote: "Wilson never worked for the CIA, but his wife, Valerie Plame, is an agency operative on weapons of mass destruction. Two senior administration officials told me Wilson's wife suggested sending him to Niger to investigate."
The report was controversial because it is against the law to reveal the identities of covert officials. If Ms Plame was investigating WMD deals, her cover would have been blown and her career ruined. Mr Wilson will not confirm or deny whether his wife is a CIA operative, but said yesterday: "Assuming it was true, the real victim in all this is American national security. Novak asserted that not only is my wife in the CIA but active in the WMD section. So senior administration officials have decided to take that particular asset out of the search for WMD in order to punish me."
http://www.guardian.co.uk/international/story/0,3604,1015160,00.html