Putin is so paranoid about being tracked, he travels in a secret grey train that stealthily blends in with other Russian locomotives, says a former elite Russian security officer

Tech Insider
Russian President Vladimir Putin travels by an aeroexpress train in the Russian Black Sea resort of Sochi, on October 28, 2013.
Russian President Vladimir Putin travels by an aeroexpress train in the Russian Black Sea resort of Sochi, on October 28, 2013.

MIKHAIL KLIMENTYEV/RIA-NOVOSTI/AFP via Getty Images

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