Iraq, is it justified?

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I have spent 2 years and 4 months total in Iraq since 2003 when it first kicked off and have operated in many different locations throughout the country. I recently returned from my last deployment. It is nearing 4 years since I first set foot in Iraq therefore I know a little bit about "change/improvement/progress" or lack there of. I am interested to hear what anyone else has to say about the progress made versus time spent in Iraq???