 He who wills the attainment of a given end, wills also the things that are necessary to that end. God wills that we should protect ourselves, retain our hold on the necessities of life, obtain that which is our due, punish transgressors, and at the same time defend the state… But these divine objectives sometimes constitute causes for undertaking and carrying on war… Thus it is God’s Will that certain wars should be waged… Yet no one will deny that whatsoever God will, is just. Therefore, some wars are just. (DIP Chap. Three)