http://www.fas.org/sgp/othergov/intel/clear-2012.pdf
Provides information on the number of individuals, government employees and contractors, with security clearances, the number denied clearance, the time it takes to process clearances, the number of security clearance investigations, and more. From the Office of the Director of National Intelligence, posted by the Federation of American Scientists
http://www.fas.org/blog/secrecy/2013/03/ntrs_dark.html
Reports the decision of the National Aeronautics and Space Administration to take down its website for technical reports, apparently due to concern about security lapses. Posted by the Federation of American Scientists
http://www.fas.org/sgp/crs/secrecy/R42106.pdf
Describes the purposes for which secret sessions may be held, the constitutional authority for such sessions, and the historical occasions when they occurred. From the Congressional Research Service, posted by the Federation of American Scientists
http://www.fas.org/irp/eprint/doj-lethal.pdf
Official version of the Justice Department Office of Legal Consul memo on the legal case for killing Americans involved with anti-American terrorist groups. Released after the leak of the document by NBC News. Posted by the Federation of American Scientists.
http://www.fas.org/irp/doddir/dod/i5205_11.pdf
Instructions which establish how the Defense Department carries out classified intelligence programs involving security measures such as polygraph testing, special eligibility reviews, and other controls on information. From the Congressional Research Service, posted by the Federation of American Scientists
http://www.fas.org/irp/eprint/doj-lethal.pdf
White paper from the Justice Department which sets forth legal framework for when and why the U.S. government can kill U.S. citizens engaged in certain activities. From NBC News and the Justice Department, posted by the Federation of American Scientists
http://www.whitehouse.gov/sites/default/files/docs/2012sharingstrategy_1.pdf
Tries to balance the need to share security-sensitive information with those who need it to protect the public and the need to protect classified and sensitive information. From the White House
http://www.gwu.edu/~nsarchiv/nukevault/ebb406/
A collection of ten declassified national security documents that reveal plans for an automatic attack directed against the Soviet Union and China if the president were lost during an attack on the U.S. From the National Security Archive.