Added to the Stuxnet resources page at https://www.welivesecurity.com/2011/01/23/stuxnet-information-and-resources-3 on 4th March 2011:

Ralph Langner at the TED Conference, as summarized by the BBC: US and Israel were behind Stuxnet claims researcher.

As previously mentioned at https://www.welivesecurity.com/2011/03/03/nice-stuxnet-commentary-and-hype-deflation. (Hat tip to Mikko Hypponen. Again!)

David Harley CITP FBCS CISSP
ESET Senior Research Fellow