Terror in the Name of God author Jessica Stern gives multiple thumbs down to the war in Iraq:
The war in Iraq has split the allies, not the terrorists. It has turned Iraq into a Mecca for international terrorists, and mobilized local Shiite and Salafi jihadist groups that had previously posed a minimal threat. It has facilitated connections between terrorists and those with formal military experience in Saddam's army, the lethal nightmare that the invasion was supposed to have thwarted. Antipathy toward the United States, not only in Iraq and throughout the entire Islamic world, but in Europe as well, has become a dangerous trend exploited by terrorists. Even as we tout our successes in rounding up al-Qaida terrorists, the broader movement inspired by bin Laden and ignited by the invasion of Iraq is recruiting new nihilist minions throughout the world. The war in Iraq has not only been a distraction from the war on terrorism; it has strengthened our enemies in ways that continue to surprise and horrify us. Where will we be surprised next?
That's from a piece she did for Salon, online here (sub or day pass ad required). Not sure I agree with her, but it's an interesting article.
Reason interviewed Stern a while back.