In the modern era mankind faces challenges that include: globalization, regional and international institutions assuming sovereign authority over states, devastating acts of terrorism, 24-hour international news coverage, super power collapse, weapons of mass destruction, and failed states that cause one to question if an ancient body of knowledge called Just War Theory can continue to serve as a moral guideline in circumstances where regimes desire using military force to resolve conflicts with other states or groups within states. Tracing the evolution of Just War Theory, the study analyzes...