emtully,

I really don't have the time to go into this so I did a quick search on google using the following terms:

"just war" augustine definition

I then clicked on the 3rd listing on the page which had the heading:

Is War With Iraq A Just War?

This is the page it brought me to:

http://covenantnews.com/baldwin030211.htm

After reading/skimming through this article I found that this writer very clearly stated many of the concerns that many people had, and continue to have. I hope you find it helpful in understanding the viewpoint of those who question the necessity of being in Iraq.