Columbia International Affairs Online (CIAO) Provides a wide range of scholarship in international affairs from 1991 onward that includes working papers from university research institutes, occasional papers series from NGOs, conference proceedings, books, journals, and policy briefs. Also includes teaching materials such as case studies and course packs of background readings. Contains links to international affairs centers, institutes, and other resources; U.S., international, and foreign government sites; environmental studies web pages; and news media services. All sections updated monthly.