Why were El Salvador's FMLN and Peru's Shining Path able to mount such serious revolutionary challenges in the 1980s and early 1990s? And why were they able to do so despite the fact that their countries' elected governments were widely considered democratic? These two guerrilla groups were very different, but both came close to success. To explain why, the author examines the complex interplay among political and economic factors, the nature of the revolutionary organization, and international actors. McClintock emphasizes that the end of the Cold War does not mean the end of revolutionary groups, and that the United States can play an important role in determining the outcome of future confrontations. The book concludes with practical policy options for the U.S. government as it looks to foster peace and democracy in the western hemisphere.