"Colin Powell Demands Answers Over WMD lies"

Colin Powell has called on the CIA and Pentagon to explain why they failed to alert him to the unreliability of a key source behind claims of Saddam Hussein's bio-weapons capability. The source, Rafid Ahmed Alwan al-Janabi or "Curveball" as his US and German handlers called him, admitted fabricating evidence of Iraq's secret biological weapons program

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George Tenet, then head of the CIA, replied to the revelation on his personal website with an excerpt from his 2007 memoir, " At the Center of the Storm:"

Curve Ball appeared to be an invaluable asset. He wasn’t. As the Silberman-Robb Commission, a presidential panel looking into Iraq intelligence shortcomings, would report in March 2005, sirens should have been going off all over the place. Whether they were or not is a matter of fierce debate.