UNHAPPY ANNIVERSARYFive years. Four thousand Americans dead. Thirty thousand injured. Here are a few milestoneshttp://www.dailykos.com/storyonly/2008/3/19/10632/4386[One year] “There are still violent thugs and murderers in Iraq, and we're dealing with them.”[Two years] “Iraq's progress toward political freedom has opened a new phase of our work there.”[Three years] “We are implementing a