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Jus in bello is a Latin term which means “the law in waging war.” It is an aspect of the international law of war which addresses the practices forbidden to belligerents during a war. Jus in bello defines standards by which a country can conduct war and the actions during the war should be just and fair. It is a group of principles intended as guidelines for the just prosecution of war. Jus in bello includes two principles of discrimination and proportionality. Discrimination defines legitimate targets and proportionality defines how much force could be used.