The U.S. Army War College s Ninth Annual Strategy Conference was held at Carlisle Barracks, Pennsylvania, during the period March 31-April 2, 1998. The theme of the conference was Challenging the United States Symmetrically and Asymmetrically: Can America Be Defeated? There were some 150 attendees, including active duty military personnel as well as members of academe, the U.S. Defense and service departments, think tanks, corporations, and news media. This book is an outgrowth of that conference, though it makes no effort to present a comprehensive and literal record of events in the mold of traditional colloquium proceedings. Rather, the book is organized as an anthology of selected conference presentations, complemented by sufficient notice of roundtable and question-and-answer discussion to provide a glimpse of the vigorous interplay of ideas evoked by this most timely of topics.