jus ad bellum

Jus ad bellum is a concept within just war theory that outlines the conditions under which resorting to armed force is considered morally and legally justifiable. Key requirements for jus ad bellum include having a just cause, such as self-defense against aggression, and ensuring that all peaceful alternatives have been exhausted. Additionally, the authority initiating the war must be legitimate, there must be a reasonable hope of success, and the intended outcome should be the establishment of a just peace. The principle emphasizes that war should be a last resort and that the anticipated benefits must outweigh the costs.12