One really needs to read what St Augustine said about the criteria for Just war.
St Augustine said that a government should do everything within it's power to find a peaceful resolution to the current problem at hand, without the shedding of Blood.
Then war should be use as a last resort if nothing comes from trying to find a peaceful solution.
Also, there are several main points that he goes through:
1. There are circumstances in which the proper authority of the state may use force in defense of its people.
2. War must only be waged by legitimate civil authority, and thee must be a formal declaration of war.
3. The purpose for which the war is fought must be just
4. The recourse to war must be a last resort.
5. The motive of war must be just
6. The must be reasonable hope of success.
7. The good consequences to be expected from going to war must outweigh the evils incurred.
8 The war must be waged in such a way that only the minimum force needed to achieve the aims of the war may be used.
As we can see, the only thing that the USA didn't follow for the just war criteria is tha tthe warefare should have been used as a last resort
It seems to me that it was more of a first resort than a last resort.
I do believe GWB really does mean to help the Iraqi people - and I am sure they are very grateful that democracy is being introduced into Iraq.
But one thing I do not like, is that the war was not used as alast resort.
Whether you agree with the war or not - it's a bit too late now.
The problem the USA didn't deal with very well, is that most of the terrirsts in Iraq aren't actually iraqi people but those from another country who have taken up the Jihad against the americans and those trying to bring a sense of order to Iraq.
One other thing I will address is this:
Is war actually a sin?
If a war isn't for freedom, then yes, i would say that war is a sin.
So, all the crusades, were not just wars but false holy wars.
They were never meant to free anything, but to re-conqure the holy land or places where muslims and Jews had set up.