At just about every crucial juncture in his career, Colin Powell has failed his country, and himself.

This sorry record goes all the way back to his time as a young U.S. Army Major posted in Saigon, when, after the My Lai Massacre, he was asked to investigate a soldier's letter describing atrocities against the Vietnamese people. Powell rejected the charges and famously wrote, "In direct refutation of this portrayal is the fact that relations between American soldiers and the Vietnamese people are excellent."