The published key judgments of the November 2007 National Intelligence Estimate (NIE) on Iran’s nuclear program contained a little-noticed statement that the intelligence community judged that Iran’s “covert” uranium conversion and enrichment activity had “probably been halted in response to the fall 2003 halt”, and “probably had not been restarted through at least mid-2007”.
That clearly implied that US intelligence had found no evidence of any undeclared covert enrichment facility.
An intelligence source familiar with the text of the full unpublished NIE has confirmed to Inter Press Service that the estimate does not refer to any evidence of a second enrichment site, even though it discussed the central importance of covert enrichment in any Iranian nuclear breakout scenario.