The Peace Corps works in countries with histories of civil wars, ethnic clashes, cross-border conflicts, rebel incursions, foreign occupations, genocide, violent protests, and repressive dictatorships. These conflicts often have on-going impacts. This review evaluated the adequacy of Peace Corps guidance on new country entries and re-entries in conflict-affected environments.We found that the Peace Corps needed to more fully assess the conflict status of countries under consideration for opening, re-opening, or expanding a Peace Corps program.