Providence seeks engagement between Christianity and American foreign policy, an effort that necessarily must proceed not upon a smooth playing-field but rather on a landscape strewn with numerous obstacles. In the United States, religious engagement on matters of public policy is as old as American society itself, and its possibility is in no way vitiated by the doctrine of separation of church and state. Such engagement does not have to do with replacing religious judgments and decisions with those of the political process; rather it proceeds as a form of citizen engagement in that process, seeking to inform it and to help it better operate â?? my own aim throughout my work is on how to understand the ethical traditions of just war and jihad of the sword. The task of such engagement is well worthwhile, but to be effectively carried out the obstacles must be recognized, understood, and negotiated. In what follows I will first lay out some of the most important obstacles, the challenges they pose, their respective weaknesses, and some thoughts on opportunities they offer; then I will offer some thoughts on how best to bring Christianity into engagement with American foreign policy.