If you’re a white-paper junkie like me Open (re)Sources is a virtual goldmine. According to the site’s author:

“OPEN(re)SOURCES is a collection of current information gathered from across the Web. Resources include information relevant National Security Intelligence found in Open Source reports, analyses, briefings, articles, etc. Topics regularly cover terrorism (both domestic and foreign), Cybersecurity, Political and Military Analyses, Environmental Issues/Impacts and Analytic Methods and techniques. Items will be posted every Thursday. While the blog posts reflect a date range, resources within those posts may be older than the indicated range; the range purely reflects the time period in which I found the resources.”

I discovered it via Analysts Corner, also a great resource.