Wilkie was an intelligence analyst at the Office of National Assessments, the government agency responsible for sifting through material provided by the United States and Britain on Iraq. He quit last year before the war, protesting that the government had exaggerated the Iraqi threat.
http://www.hindustantimes.com/news/181_836636,0005.htm

"Washington was not always frank with its allies during the buildup to war ... UK and Australian intelligence agencies needed to treat the US more as a focus of intelligence interest than as a close ally," he wrote.

Wilkie claims shaky intelligence reports were wrongfully firmed up to justify the Iraq invasion.

"Most often the deceit lay in the way Washington, London and Canberra deliberately skewed the truth by taking the ambiguity out of the issue, Wilkie wrote.