Spy Games

madmag.com

It could be the world's second-oldest profession. In fact, spying goes back at least as far as China's Sun-Tzu (544-496 BCE), who, in his famous The Art of War, describes five classes of spy ~ local, inward, converted, doomed, and surviving ~ whose combined use he calls "divine manipulation of the threads." Here is a chronology of spying, from the Roman Empire to the NSA: http://www.bbc.co.uk/news/magazine-24749166

(1) Local spies; (2) inward spies; (3) converted spies; (4) doomed spies; (5) surviving spies. - See more at: http://suntzusaid.com/book/13#sthash.9O7DNppZ.dpuf

(1) Local spies; (2) inward spies; (3) converted spies; (4) doomed spies; (5) surviving spies. - See more at: http://suntzusaid.com/book/13#sthash.9O7DNppZ.dpuf