The Enigma Machine. The B2 stealth bomber. The poisoned-tipped umbrella. Napoleon’s Briefcase of Secrets. As long as there has been conflict, there have been spies, and as long as there have been spies, there have been incredible gadgets and iconic objects. These are the stories of the tools that power the world of espionage.  Learn more about your ad choices. Visit megaphone.fm/adchoices