As we weigh our moral responsibilities, we need to remember that Thomas Aquinas put the just war doctrine—the idea of government wielding the sword—under the heading of “Love” in his great Summa Theologiae. He did that because being willing to defend innocent civilians is an act of Christian charity.
The job of government biblically is to wield the sword to preserve order and protect life. A policeman in the middle of a gun battle that starts during a robbery cannot just walk away when the shooting gets too heavy. It is his duty as a magistrate to stay and restore peace. Isn’t that the same position we are in now in Iraq?
The politicians tell us we should bring our troops home, and everything will be just fine. Sadly, in a fallen world, it doesn’t work that way. The innocent will die.