This article was offered in 2001 as the Times Literary Supplement\u27s main commentary the week following 9-11. The essay argues that 9-11 required war as a response, and challenges views expressed in the days following 9-11 by commentators such as Anne-Marie Slaughter and Michael Ignatieff that the proper response by the United States should be criminal law in nature - either international criminal law, through international tribunals or procedures, or domestic criminal law of the kind pursued in the first 1993 World Trade Center bombing. It further argues against the functional pacifism of many Christian theologians who, while approving of just war principles in theory, never manage to approve any actual war in practice. At the same time,...