What's the evidence behind our counterterrorism strategy?
China's next-generation fighter jet progress, how Russia would react to a crisis and other things we don't know.
Three points on Obama's comment that he does not consider the NSA leaker a patriot.
The intelligence community is citing a five-year-old case against a Somali cab driver to justify NSA programs.
Transcript and video highlights from an interview with lots of foreign policy and national security talk.
Why would so many Mideast diplomatic buildings stay open, while four in sub-Saharan Africa be closed?
The latest NSA program to be unveiled appears to involve lots of database work and Linux experience.
Wget, which dates to 1996, has a function so simple you probably didn't realize you needed a program to do it.
As many as 4 million people hold top secret clearance. Is that information really still secret?
The NSA leaker has said the country would be his first choice, but it's not clear they would take him.