It's not even his biggest boat, but the citizens of Venice are up in arms about Russian billionaire Roman Abramovich and his girlfriend Dasha Zhukova, who have cast a shadow over St Mark's Square in Venice during the Biennale, one of the peak events of the year in Venice. They've done it by merely anchoring their enormous megayacht in an otherwise scenic lagoon. The Russian oligarch arrived for this week's Venice Biennale art extravaganza. He wasn't the only Russian at the party though. The 'World ...