Acts of terrorist violence like this are probably going to go on for years. Just like in Israel.

Such acts are now thoroughly condemned by both Sunnis and Shiites and are largely being handled by Iraqi police and army forces. You might have noticed that your favored meme of terrorists and insurgents as "Minutemen" sheltered by the Iraqi population curled up and died months ago.

If acts like this end up being your only criteria for a failed nation, I guess you'll be able to cling to that for a long time to come. As for every other criteria for progress, the article you posted and the numbers I posted speak for themselves.