But we do fault ourselves for failing to deconstruct the W.M.D. issue with the kind of thoroughness we directed at the question of a link between Iraq and Al Qaeda, or even tax cuts in time of war. We did not listen carefully to the people who disagreed with us. Our certainty flowed from the fact that such an overwhelming majority of government officials, past and present, top intelligence officials and other experts were sure that the weapons were there. We had a groupthink of our own.
By the time the nation was on the brink of war, we did conclude that whatever the risk of Iraq's weaponry, it was outweighed by the damage that could be done by a pre-emptive strike against a Middle Eastern nation that was carried out in the face of wide international opposition. If we had known that there were probably no unconventional weapons, we would have argued earlier and harder that invading Iraq made no sense.
Saddam Hussein was indisputably a violent and vicious tyrant, but an unprovoked attack that antagonized the Muslim world and fractured the international community of peaceful nations was not the solution. There were, and are, equally brutal and potentially more dangerous dictators in power elsewhere. Saddam Hussein and his rotting army were not a threat even to the region, never mind to the United States.
Now that we are in Iraq, we must do everything possible to see that the country is stabilized before American forces are withdrawn. But that commitment should be based on honesty. Just as we cannot undo the invasion, we cannot pretend that it was a good idea — even if it had been well carried out.
http://www.nytimes.com/2004/07/16/opinion/16FRI1.html