Crimes of War – Jus ad Bellum / Jus in Bello. Thomas Aquinas. He was the foremost classical proponent of natural theology, and the father of Thomism.
His influence on Western thought is considerable, and much of modern philosophy was conceived in development or refutation of his ideas, particularly in the areas of ethics, natural law, metaphysics, and political theory. Unlike many currents in the Church of the time,[6] Thomas embraced several ideas put forward by Aristotle — whom he referred to as "the Philosopher" — and attempted to synthethise Aristotelian philosophy with the principles of Christianity.[7] The works for which he is best known are the Summa Theologica and the Summa contra Gentiles. JustWarTheory.com.
The Just War Theory. GCSE Bitesize: Conditions for a Just War. Just War Theory Just war theory deals with the justification of how and why wars are fought.
The justification can be either theoretical or historical. The theoretical aspect is concerned with ethically justifying war and the forms that warfare may or may not take. The historical aspect, or the "just war tradition," deals with the historical body of rules or agreements that have applied in various wars across the ages.
For instance, international agreements such as the Geneva and Hague conventions are historical rules aimed at limiting certain kinds of warfare which lawyers may refer to in prosecuting transgressors, but it is the role of ethics to examine these institutional agreements for their philosophical coherence as well as to inquire into whether aspects of the conventions ought to be changed. Weaknesses of just war theory.