CNN.com - Spy boss warns of terror strike - Aug. 13, 2003: "Australia's spy chief has warned a 'catastrophic' terror attack -- possibly involving biological, chemical or nuclear weapons -- is a certainty and that the war against terrorism is far from over. "
What he actually said was milder, but consistent: "There is genuine concern that a catastrophic attack is a certainty and only a matter of time -- a point on which I'm inclined to agree."
Nothing new here, only saying what just about every security expert has said. Nothing fundamental has changed; technology advances and the cost of defense rises faster than the cost of offense. At the moment the would-be attackers have motivation and money, but even if that went away the really fundamental issues would remain. The fundamental issues are all about technology.