A good resource dealing with international affairs is CIAO [Columbia international affairs online].
This is what they say about their own website:
Columbia International Affairs Online (CIAO) is the most 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.

For those of you concerned with African Studies you will find several working papers, occasional papers, etc with topics about different african countries.