It doesn't really matter how much of the rules or the dogma we accepted and lived by if we're not really living by the fundamental creed of the Catholic Church, which is service to others and finding God in ourselves and then seeing God in everyone - including our enemies.
Our enemies, like the Grecian hero, have one vulnerable point. You have not touched it yet. What should have been their element of weakness has been suffered to remain an element of strength.
We can come to look upon the deaths of our enemies with as much regret as we feel for those of our friends, namely, when we miss their existence as witnesses to our success.
We can no longer apply the classic criteria to clearly determine whether and when we should use military force. We are waging war in Afghanistan, for example, but it's an asymmetrical war where the enemies are criminals instead of soldiers.
