This book analyzes the strategic framing of mass atrocity cases in US and UN policy arenas to build knowledge concerning whether and how the humanitarian and human rights norms embedded within those frames affected decision outcomes in each of three mass atrocity cases: Somalia, Rwanda, and Sierra Leone. By exploring strategic framing in relation to the interactive nature of decision-making logics that policy elites utilize in formulating responses to mass atrocity cases, especially complex policy decisions like humanitarian intervention, we can discern how human rights and humanitarian norms travel and compete with other prevailing norms in the policy-making process.