Unfortunately, greed and passions of powerful minorities overrule the hopes of most human beings. Pope John attempts to utilize reason:
114. Here, then, we have an objective dictated first of all by reason. There is general agreement—or at least there should be—that relations between States, as between individuals, must be regulated not by armed force, but in accordance with the principles of right reason: the principles, that is, of truth, justice and vigorous and sincere co-operation.
115. Secondly, it is an objective which We maintain is more earnestly to be desired. For who is there who does not feel the craving to be rid of the threat of war, and to see peace preserved and made daily more secure?
116. And finally it is an objective which is rich with possibilities for good. Its advantages will be felt everywhere, by individuals, by families, by nations, by the whole human race. The warning of Pope Pius XII still rings in our ears: “Nothing is lost by peace; everything may be lost by war.” (Cf. Pius XII’s broadcast message, August 24, 1939, AAS 31 (1939) 334)
I do think some people believe some things are lost in peace. Certainly, those dealing in arms may prefer not to retool their trade and sell more constructive items. Too much power in the world; not enough reason.
Catholic Sensibility 