A highly classified U.S. intelligence assessment circulated to policymakers early last year largely affirms that view, originally made in 2007. Both reports, known as national intelligence estimates, conclude that Tehran halted efforts to develop and build a nuclear warhead in 2003.
[/quote]You mean the same intelligence agency that fumbled 9/11?
What may have actually set Iran back is the STUXNET worm. Very interesting and targeted piece of coding. I find it interesting compairing the claims of the intelligence assessment against the statements of Gary Samore, White House Coordinator for Arms Control and Weapons of Mass Destruction. (see PBS “Need to Know” – May 2011)