This seminar will be organized in 7 2-hour sessions with leading experts on the law of war and war crimes, who will present scholarly work-in-progress and current projects in the field of international humanitarian law. Students will be expected to participate in discussion of the experts' papers and to write short reaction papers on several of them. Grading will be credit/fail. (By special arrangement with the instructor, students could opt to write a supervised paper for a grade and/or major writing credit.) The seminar is required for participants in the Columbia-Amsterdam Alliance on International Criminal Law and also open (subject to space limitations) to other students.