How German intelligence helped justify the US invasion of Iraq

Five years ago, the US government presented what it said was proof that Iraq harbored biological weapons. The information came from a source developed by German intelligence -- and it turned out to be disastrously wrong. But to this day, Germany denies any responsibility. . . .

The man's codename is "Curveball." And in an earlier life, he played a crucial role in the geo-politics at the beginning of this decade: He was the man who provided vital "evidence" that ultimately contributed to the invasion of Iraq by the United States and its allies. But that role has since turned into his greatest problem: Everything he claimed to know about Iraq's weapons program, all the proof he presented, was fabricated.