Aha, and a little research rather makes it look as if the conspiralooons have got the wrong end of the stick again. From what I can gather, he seems to be saying something rather different to '9/11 inside mossad job'
Here is the original article, anyone good at translating?
It looks as if he is commenting on the latest Bin Laden tape, which he says will be proven to be a fake, faked by Silvio Berlusconi's "Mediaset".
He then goes on to say that nobody has come forward standing up for the authenticity of the Osama tape, because Osama admits to doing 9/11... specifically;
"Da ambienti vicini a Palazzo Chigi, centro nevralgico di direzione dell'intelligence italiana..."
http://www.corriere.it/politica/07_novembre_30/osama_be...
My very rough interpretation of what he is saying is something like; "The atmosphere around Palazzo Chigi, nerve center of Italian intelligence..." is that the tape is not authentic, and this is bolstered by the fact that the sense in the "ambienti democratici d'America e d'Europa" (democratic atmosphere of America and Europe) is that 9/11 was a CIA/MOSSAD job. He goes out of his way to say that this is definitely the case with the Italian left.
That's not quite the same as what the conspiraloons are saying, but if anyone can do a better translation it might help. It looks like he is having a go at Berlisconi and the febrile atmosphere in which conspiracy theories thrive. But my Italian is very poor.