Today more than ever, questions are being asked about the morality of nuclear weapons. A week ago in Amsterdam, the World Council of Churches summoned some of the world's leading theologians, together with experts in the field, to five days of public hearings on the issues raised by the deployment of nuclear weapons. Military experts outlined what we can do with nuclear weapons; theologians debated what we should do. What moral and religious grounds are there for deciding that the deployment of nuclear weapons is right, or wrong? Peter France reports for Everyman from Amsterdam.