There is more than one condition which can make warfare justified, with the main three notions concerning the just war theory being Jus ad bellum, Jus in bello, and Jus post bellum. The first notion involves one community going to war against another in order to do justice by either recuperating stolen lands or punishing those who committed immoralities. The Jus in bello war theory refers to combatants performing war without harming non-combatants. Jus post bellum involves a community engaging in ending a conflict consequent to leaving the offender with no options other than to surrender and to cooperate with the victor (War).

Given the fact that warfare involves murders one can consider that no reason is strong enough to influence communities in going at war. It is divisive...

The just war theory is an ethical dilemma; it involves people having to use immorality in order to stop immoralities from happening.
Works cited:

1. Pearce, Lisa D. And Arland Thornton. (2007). "Religious Identity and Family Ideologies in the Transition to Adulthood." Journal of Marriage and the Family. 69: 1227 -- 1243.

2. Schorr, A. (1980). Thy Father & Thy Mother: A Second Look at Filial Responsibility & Family Policy. Washington, DC: G.P.O.

3. Christianity. The Columbia Encyclopedia, 6th ed.

4. Roman Catholic Church. The Columbia Encyclopedia, 6th ed.

5. War. Stanford Encyclopedia of Philosophy. Retrieved July 24, 2010, from http://plato.stanford.edu/entries/war/