What leads a country's population to support or oppose peacekeeping operations? Are there cross-national diff erences in public support for peacekeeping? In this paper, we aim to answer these questions by examining public attitudes towards peacekeeping operations in the United States and ten European nations (France, Germany, Italy, the Netherlands, Portugal, Spain, the United Kingdom, Poland, Slovakia, and Turkey). is paper also assesses several explanations for cross-national variations in support for these missions. More specifi cally, we aim to determine whether theories of risk assessment, elite cues, and policy objectives can explain public support for peacekeeping cross-nationally.