"The United States appears to have made a major intelligence blunder over North Korea's nuclear weapons programme, one that may have exacerbated tensions with Pyongyang over the past four years and goaded Kim Jong-Il into pressing ahead with last October's live nuclear test, intelligence and Bush administration officials have said. The blunder does not concern the plutonium-based bomb technology that North Korea used in its test and has clearly been developing for decades. Rather it concerns the assessment, in a Central Intelligence Agency report to Congress in November 2002, that North Korea was also pursuing a parallel uranium enrichment programme capable of providing the raw material for two or more nuclear weapons a year, starting "mid-decade".