There's not much more to say. The article has a has quite a lot of condemning material. Particularly silly is Aarononvitch's criticism of the Lancet's studies as "absurd" and referring to them as "based, it was claimed, on standard epidemiological methods". Around the same time, he wrote that there were "three million might have died in the Congo" - this figure was produced by Les Roberts, who was of course the man behind the 2 "absurd" Iraqi studies!
Hardly the man to get the truth out of Blair in his exclusive interview but that's presumably why he got to do it.