Quote from : Young Stalin Book

So much of the inexplicable about the Soviet experience—the hatred of the peasantry for example, the secrecy and paranoia, the murderous witch hunt of the Great Terror, the placing of the Party above family and life itself, the suspicion of the USSR’s own espionage that led to the success of Hitler’s 1941 surprise attack—was the result of the underground life, the of the Okhrana and the revolutionaries, and also the Caucasian values and style of Stalin. And not just of Stalin.