: He provided vital data on German rocketry and strategy and built the "Yugoslav Ring" network to funnel false info to Berlin.
: Originally recruited by the German Abwehr in 1940, the 27-year-old Popov immediately offered his services to the British. Codename Tricycle: The True Story of the Second...
: While the Germans called him "Ivan," the British MI5 dubbed him "Tricycle" . Though rumors suggest the name referred to his fondness for "three-way" romantic encounters, official records indicate it was because he headed a small ring of three double agents. Key Operations & Contributions : He provided vital data on German rocketry