Strong states frequently intervene in the affairs of weaker societies. Since 1945, the most frequent intervener has been the United States. International norms cut both ways -- sovereignty opposes intervention while an emerging "responsibility to protect" sometimes favors it. This course explores why and by what means states and international organizations intervene and what factors influence the success of interventions. We focus mainly on two types -- counterinsurgency and humanitarian intervention -- that have been and are likely to remain the most common. Prerequisites: IR 10 and department permission. Kaufmann (SS)