Spy vs. Spy

Depending on whom one asks, there are 16 or 17 official spy agencies in the United States alone, the CIA (Central Intelligence Agency), of course, being the most well-known. They've been around a lot longer than Edward Snowden ~ all he did was open the can of worms and expose its contents to the light. Here's a brief and fascinating history of spies around the world: http://www.bbc.com/news/magazine-24749166