Where will the next war occur? Who will fight in it? Why will it occur? How will it be fought? Researchers with RAND Project AIR FORCEs Strategy and Doctrine Program attempted to answer these questions about the future of warfare - specifically, those conflicts that will drive a U.S. and U.S. Air Force response - by examining the key geopolitical, economic, environmental, geographic, legal, informational, and military trends that will shape the contours of conflict between now and 2030. This report is one of a series that grew out of this effort.