No More Killing Fields Preventing Deadly Conflict. David A. Hamburg. Rowman and Littlefield, Lanham, MD, 2002. 391 pp. $39.95. ISBN 0-7425-1674-1.  The best approach to preserving peace and preventing war and terrorism, Hamburg argues, lies in cooperative, international efforts that support preventative diplomacy, build democratic institutions, and upgrade socioeconomic development.