The term "literature review" can mean different things in different contexts. All share in common the idea of examining the scholarly literature on a topic. It is the end result that differs:
Below are some useful links for writing a literature review.
Here are the starting points for research in International Affairs
Additional general databases (see subject and topic specific lists below)
International Security, Intelligence, and Military Science
The databases below have a regional focus, with the caveat that some have a disciplinary focus as well.