Prometheus 6

According to OpinionJournal, we've already lost the Iraq war. The signs of defeat:

The U.S. would lose all credibility on weapons proliferation. One doesn't have to be a dreamy-eyed optimist about democracy to recognize that toppling Saddam Hussein was a milestone in slowing the spread of WMD. Watching the Saddam example, Libya's Moammar Gadhafi decided he didn't want to be next. Gadhafi's "voluntary" disarmament in turn helped uncover the nuclear network run by Pakistani scientist A.Q. Khan and Iran's two decades of deception.

Now Iran is dangerously close to acquiring nuclear weapons, a prospect that might yet be headed off by the use or threat of force. But if the U.S. retreats from Iraq, Iran's mullahs will know that we have no stomach to confront them and coercive diplomacy will have no credibility. An Iranian bomb, in turn, would inspire nuclear efforts in other Mideast countries and around the world.