Friedman isn't alone. It seems all those who thought it was a good idea to invade Iraq are putting the blame on others for all the mistakes that were and are being made. Is there anyone who will admit that they them self made a mistake in reasoning? After all there were others (in fact most of the world) that weighed the benefits (overthrow of a horrific dictatorial regime, an Arab democracy, cheaper oil, etc.) versus the costs (money for the war and rebuilding Iraq, American and Iraqi lives, alienation of the most of the world etc.) and saw that the risks outweighed the rewards.
Maybe God is to blame? Didn't God tell GWB that he should go to war with Iraq? If Bush doesn't get re-elected because of this, will he lose faith? No, if God's advice works out, it reaffirms his existence and if things don't go well it's because he wasn't a good enough christian.