Columbia International Affairs Online (CIAO) is a comprehensive source for theory and research in international affairs. It publishes a wide range of scholarship from 1991 onward that includes working papers from university research institutes, occasional papers series from NGOs, foundation-funded research projects, proceedings from conferences, books, journals and policy briefs. Teaching materials including original case studies, course packs of background readings for history and political science classes. All sections of CIAO are updated monthly. (en)