Did Imperial Russia or the Soviet Union pursue battlecruiser designs?
Short answerYes. Imperial Russia began the Borodino class, and the Soviet Union later considered battlecruisers again.
NotesImperial Russia began the Borodino-class battlecruiser programme in the same broad era as the Gangut dreadnoughts, but the First World War prevented the planned force from entering service. The Soviet Union later examined battlecruiser designs of its own. Russia repeatedly showed interest in the type despite completing few ships that fit it.