The field of Christian ethics has been the location of a debate over the past decades between roughly delineated parties representing an allegiance to the use of formal prescriptive principles on the one hand, and those representing the cause of the more existential response to a particular situation on the other hand. The debate has taken place in Europe and the United States, it has taken place in Catholicism and in Protestantism. In European Protestant literature Karl Barth's Church Dogmatics, particularly Volume II/2, Bonhoeffer's Ethics, and Niels Søe's Kristelig Etik, have represented what has been called a “contextual” approach. More traditional Lutheran theologians who stress the importance of ethics under the law have a larger place for traditional ethical principles. Werner Elert and Walter Künneth would be representative of this group. In Catholic literature there was a movement in the early years after World War II that came to be called “situational morality.” A critic has typified it in the following terms, “The ultimate differences between this new morality and traditional morality come down then to this: In an objective system of ethics the moral judgment is submitted to an extrinsic norm, an ontological norm founded on the principles of being. In situational ethics the moral judgment is measured only by the subjective, immanent light of the individual in question.” In contrast to the situational emphasis is the whole tradition of natural law ethics and moral theology as this developed in Roman Catholicism. It should be noted that some of the recent Catholic ethics continues to be influenced by a situational approach, though not in the extreme way of earlier materials.