A comment by a prominent campaigner has touched off a fevered debate over Russian influence in a former Soviet republic. It's not so often that Romantic poets set social media alight. But that's exactly what happened when the subject of Alexander Pushkin came up on a Russian TV programme. The interviewee, Alexei Navalny, is an anti-corruption campaigner who has long been one of the leading figures opposing Russian President Vladimir Putin. In a conversation on the independent Russian Dozhd TV channel, Navalny and presenter Ksenia Sobchak suggested that Pushkin - one of Russia's great cultural figures - was largely unknown...