Under Paul's (St. Augustine"s) view of a "just" war, the first Iraq war was baseless as Iraq didn't invade us or directly threaten us. Further, the wars with Spain, Germany, Korea, Vietnam, and all of Reagan's police actions were improper as well. The Afghan war is very questionable as the Taliban did not directly sent the terrorists and they were not Afghan. This is not an unusual arguement and can be heard in the Christian churches (liberal) and college campuses. The Berrigan Brothers, for all their radicalism, were very consistant during the 60's and 70's with just the sort of argument Paul was making.
I don't agree with it but I can understand the scriptural basis. I am afraid that, sinner that I am, I have a far darker view of human nature and survival.
I believe that scripturally, one can derive that a nation is morally just in defending an Ally.
If I recall correctly, wasn't it St. Augustine who held that the penis was evil because it was beyond the control of the rational mind?
I just remember reading that in Russell's - History of Western Philosophy about 15 years ago.