Most war studies have focused on the causes of war or when and how they should be initiated. However, research on war termination is relatively rare. A large portion of war termination studies are based on the rational model. However, real wars have a tendency of being protracted beyond the break-even point assigned by rational model theory. In this context, this study, under the premise that war is much easier to initiate rather than to end, examines the structural factors associated with war protraction and illuminates the Vietnam war as a case study. Some political implications are offered in the conclusion.