This document presents a particularly challenging unit that thrusts students into the new foreign policy frontier that has developed since the end of the Cold War. The unit contains background reading and foreign policy options. The first part of the background reading introduces students to the institutions and conceptual framework of the international community. In the second and third parts, students are given four historical and five current case studies to examine. Consideration of the case studies requires the highest levels of thinking from students. Not only are students asked to analyze the case studies individually, but they also are expected to draw lessons from each in developing a context for evaluating the overall U.S. role in international intervention. The four distinct policy directions, or options, at the core of the unit are designed to help students further clarify their thoughts in order to articulate their own views. Each option is grounded in a clearly defined philosophy about the U.S. role in the world and the country's relationship with the United Nations. By exploring a spectrum of alternatives, students gain a deeper understanding of the competing values and assumptions that frame the debate on U.S. policy toward intervening abroad in civil conflicts. The unit contains a lesson plan and student activities, supplementary documents for teachers, and suggested readings. (Author/DK)