A Russian sailor’s online selfie may have just given away the position of one of the world’s most powerful battlecruisers, according to Hans de Vreij’s analysis. https://twitter.com/hdevreij/status/794799880493469696 https://twitter.com/hdevreij/status/795220486347075585 The sailor’s selfie reportedly puts Russian ship Pyotr Velikiy off the coast of Crete in the Mediterraenean sea. Russia is likely building up its naval aresenal in the…