The first systematic attempt to reconstruct from original manuscript
sources and early printed books the medieval doctrines relating to the
just war, the holy war and the crusade. Despite the frequency of wars
and armed conflicts throughout the course of western history, no
comprehensive survey has previously been made of the justifications of
warfare that were elaborated by Roman lawyers, canon lawyers and
theologians in the twelfth and thirteenth century universities. After a
brief survey of theories of the just war in antiquity, with emphasis on
Cicero and Augustine, and of thought on early medieval warfare, the
central chapters are devoted to scholastics such as Pope Innocent IV,
Hostiensis and Thomas Aquinas. Professor Russell attempts to correlate
theories of the just war with political and intellectual development in
the Middle Ages. His conclusion evaluates the just war in the light of
late medieval and early modern statecraft and poses questions about its
compatibility with Christian ethics and its validity within
international law.