Rome vs. Washington
Interesting piece. I'm including the part of the article where he gives Rome's view of the just war criteria, but the article is about much more than just this. From the The Spectator.co.uk:
The Thomist definition of the necessary conditions for a just war (Summa Theologica, II-II, Q.40) is, like all his writing, admirably straightforward. War must be declared by a competent authority; the US president and Congress fulfil this requirement constitutionally in terms of self-defence, but not to cast America in the role of international policeman. There must be just cause, i.e. attack by an aggressor or a need to restore rights lost under aggression; this validated the 1991 Gulf war, provoked by the invasion of Kuwait. There must also be proportionality — the likely suffering and destruction caused by war must be outweighed by the just cause. Most of the world disputes this in the context of Iraq. The remaining stipulation is the right intention, meaning that the belligerent must intend to re-establish justice and a lasting peace. America clearly has the intention of affording Iraqis an opportunity to live under a more just regime; but the acute hazard of destabilising the Middle East, with the possibility of other governments falling to militant Islam and a massive resurgence of terrorism, could be held to cancel that out.