John Calvin's two kingdoms political thought offers a fresh paradigm for constructive Christian engagement in pluralistic liberal societies.

This volume unites three disparate strands of historical and legal experience. Nearly from its beginning, the Catholic Church has sought to promote peace – among warring parties, and among private litigants. The volume explores three vehicles the Church has used to promote peace: papal diplomacy of international disputes both medieval and contemporary; the arbitration of disputes among litigants; and the use of the tools of reconciliation to bring about rapprochement between ecclesiastical superiors and those subject to their authority. The book concludes with an appendix exploring a wide variety of hypothetical, yet plausible scenarios in which the Church might use its good offices to repair breaches among persons and nations.