too bad that he ended up being an apologist for the administration

‘I tried to avoid this war.’

Former Secretary of State Colin Powell revealed that he spent 2.5 hours “vainly trying to persuade President George W. Bush not to invade Iraq and believes today’s conflict cannot be resolved by U.S. forces. ‘I tried to avoid this war,’ Powell said at the Aspen Ideas Festival in Colorado. ‘I took him through the consequences of going into an Arab country and becoming the occupiers.’” In terms of the current situation in Iraq, Powell said: “It is not a civil war that can be put down or solved by the armed forces of the United States.”

(Think Progress)
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So he went against everything that he believed in and believed was true in order to make a case for a war that he knew was wrong. It's too bad that he didn't go public with these doubts...