Experience has shown that conflict resolution requires the application of all elements of national and international power -- political, diplomatic, economic, financial, informational, social, and commercial, as well as military. To resolve conflicts or crises, the North Atlantic Treaty Organization (NATO) should adopt a Comprehensive Approach that would enable the collaborative engagement of all ... [Show full abstract] requisite civil and military elements of international power to end hostilities, restore order, commence reconstruction, and begin to address a conflict's root causes. NATO can provide the military element for a comprehensive approach. Many other national, international, and nongovernmental actors can provide the civilian elements. In May 2007, the Royal Danish Embassy in Washington, DC, and the Center for Technology and National Security Policy at the National Defense University held an informal workshop of experts from across the Alliance to explore options for creating an international comprehensive approach to post-conflict stabilization and reconstruction. This paper is the product of that workshop and subsequent collaborations. It endeavors to describe the major requirements for conflict resolution, what NATO has learned from its post Cold War experiences to date in the Balkans, Afghanistan, and elsewhere, and how a more effective program of international civil and military engagement can be put in place. Much work remains to be done to flesh out the initiative, but already it is clear that military efforts in the field must be complemented throughout any operation by non-military means that bring to bear the expert civil competencies of other actors, both national and international.