In London on Tuesday the British public inquiry into the Iraq war heard a staggering revelation.
A taxi driver, peddling fares along Iraq's border with Jordan, was the one who told British intelligence that Saddam Hussein had weapons of mass destruction capable of hitting Britain in less than an hour's flying time from Baghdad.
And they believed him!
We know this because the claim turned up in a 2002 so-called "dodgy" dossier that was partly used to justify Britain joining the U.S. led invasion of Iraq six months later.
So it was a taxi driver who provided the WMD link. Wow. No wonder Mr Blair looked shattered when I saw him on Tuesday in Washington.
I'd gone to the US state department to see if I could get any "sound" - as we TV professionals like to call it - from the former British prime minister who is now envoy to the Middle East Quartet (comprised of the US, Russia, the United Nations and the European Union).
Mr Blair was in the DC district of Foggy Bottom to update Hillary Clinton, the US secretary of state, on Middle East issues over a working breakfast.
They appeared together in the elliptical Treaty Room at the state department, which is at the centre of the a suite of period offices.
The Treaty Room is notable for its curving blue walls, inlaid wooden floor, white columns, and chandeliers.
I noticed that the table on which the treaties are signed looks just like one in my sister's dinning room. I must tell her that. She'll be pleased.
Anyway, unfortunately, I was out of luck on the "sound."
Apart from a few standard comments delivered to the three TV cameras and handful of journalists who'd bothered to turn up, neither Mr Blair nor Mrs Clinton took any questions.
But I did think to myself: "You're looking old these days, Tony."
I had not seen him since September 2007 when he was at the United Nations in New York for his first meeting of the Quartet and he has aged quite a lot since then.
I remember reporting the 1997 Labour Party election victory in the UK and the moment when he and his wife Cherie were filmed by a TV crew on the aeroplane returning from his Sedgefield constituency to London.
They held hands and could be seen talking about the job in hand. Both seemed young, fresh and eager to get on with their new life.
I put all this looking old stuff to our executive producer in the DC newsroom who, like me, is from Britain and he said: "Well, it happens to us all."
He's right, of course, but Mr Blair also refused to look anyone in the eye and kept staring down at the carpet.
At the time I could not work out why he looked so haggard and ill-at-ease - but that was before I realised that a cabbie had been driving the war effort.
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