Muammar Gaddafi's 42-year dictatorship is hanging by a thread, most of his family is either under arrest or in exile, and rebels are celebrating their impending victory in virtually every village, town and Tripoli neighborhood. It's like Iraq in March 2003. But things in Iraq changed quickly. We know from that experience that now isn't the time for celebration. If the Libyan people don't learn from the mistakes the U.S. made in Iraq, they could repeat the violence that has wracked that country for the past eight years. In short, it's a time to worry about Libya's future.