However, here are a few options that capture various aspects of "Just War" and could be used in similar contexts:
* Rightful War: Emphasizes the legitimacy and morality of the conflict.
* Moral War: Highlights the ethical considerations and justifications.
* Legitimate War: Focuses on the legal and political justification for the war.
* Necessary War: Stresses the importance and inevitability of the conflict.
* Holy War: (Historically used, potentially controversial) - Indicates a conflict perceived as having divine justification.
The best choice depends on the specific context and the desired emphasis.
It's important to remember that "Just War" theory is complex and involves a set of criteria for judging the morality of war. Any two-word alternative will necessarily be a simplification.