Section III of the report discusses assessments of Iraq's domestic nuclear program. It focuses a significant amount of attention on the intelligence process that took place in the spring of 2001 regarding Iraq's attempts to purchase 60,000 high-strength aluminum tubes. The CIA concluded that the tubes could be intended for constructing centrifuges for a uranium-enrichment program (i.e., for a restarted Iraqi nuclear weapons program); analysts in the Department of Energy and the Department of Defense considered that to be unlikely.