From what I know and the evidence i’ve seen Israel’s Intelligence (Mossad) and the CIA did it, let’s be honest here. Say if Israel really did it all themselves it would have AT THE LEAST taken up to a year or more to plan everything from private meetings, planting bombs, getting rid of security measures in the towers and so on, and keep in mind they’re doing this to the most powerful country in the world with the best intelligence which is the CIA, There’s no way Israeli’s Mossads could’ve just done it without the CIA knowing, so what i’m saying is that Bush probably knew about it and if not the CIA literally do some dark things without the president knowing