UCGal: If you’re looking for an unbiased and non-partisan source on national security, you should visit the Federation of American Scientists (FAS) website, specifically their blogs/writings on Government Secrecy and Strategic Security. The FAS was founded just after WWII by scientists who worked on the Manhattan Project and were concerned by government attitudes towards “official secrets”. You can trace the rise of the National Security State to those times, especially after the Cold War “broke out” between the US and the USSR.
Nat Hentoff is another excellent writer on this topic. I think he’s with Cato Institute now, but spent nearly three decades with the Village Voice (which is most assuredly not right wing).