Abstract

Civilized humanity has long pondered the morality of war and the parameters of just behavior in war. Since ancient times philosophers, theologians, civic leaders, warriors, and jurists have formulated concepts and theories outlining the ethical boundaries of a justified use of force as well as for just behavior in war . Taken together, these principles define a bellum justum or just war. Just war theory, legal interpretation, and international law help to define the rationale for a just declaration of war and for just behavior of those tasked with conducting and fighting wars. This dissertation examines the relevance of just war theory for the 21st century, specifically, the relevance of jus in bello to contemporary issues and trends. ;Following a survey of major philosophies, strategies, and personalities that have significantly contributed to the development of just war theory, the author surveys contemporary scholars who have advanced this theory. The dissertation then examines some modern issues that challenge the application of jus in bello principles. These issues call for further study, both external and internal , in defining the parameters of just behavior in war. Such issues include modern military technology , the vulnerability of non-combatants, the ethical use of military contractors, and ecological concerns. This work concludes with suggestions for further scholarship and discussion regarding just war developments