This short text is perfect for a capstone course at the undergraduate level or for an introduction at the graduate level. Alexander L. George - a leading light in U.S. foreign policy - has written a reflection on what he calls the "puzzles and gaps" he has discovered in his study and practice over the past 60 years. In the process, he not only covers his own areas of inquiry - such as his pioneering use of the case study method -but also manages to outline the major debates and dilemmas within foreign policy scholarship that persist to this day. Also included is a preview of new work that Alex George is developing with David A. Hamburg, former president of the Carnegie Corporation of New York.