For several weeks now, I've been having a very civil and mutally-enlightening e-mail debate with a friend about Iraq. Neither of us has an opinion set in concrete, though I tend to think our presence there is making things worse and he leans towards believing we could still wind up being glad we've done what we've done.
I asked him to suggest an article I could link to here that would make the best possible case for his position. He came back with a piece by Lawrence Kaplan written for the New Republic magazine. No matter how you feel about the war, you might want to read it and also this brief rebuttal by Matthew Yglesias.
I still would love to believe Iraq is not the biggest mistake ever made in the category of U.S. Foreign Policy. If someone else can point me to an article that makes a stronger case, I'd like to read it and link to it.