IIRC, Raimondo claimed that Israel had advance knowledge...not that they were behind it.
I could be mistaken as well, I think the thread was pulled and Raimondo was banned, but I believe he was saying that we should look at who benefits from the attacks and that would show us who committed them, and he claimed the answer to both was Israel. This was right after they occurred, sort of an amazing Rohrschach test for an anti-Semite: here's a picture of two burning skyscrapers, what do you see? Answer: Jews.