A Latvian-American businessman who made his money in Russia before becoming a critic of Putin has been found dead in the US, Russian media has claimed. Dan Rapoport, an investment banker, is said to have killed himself in Washington DC in recent days - with the former editor of Russian Tatler magazine claiming Tuesday that his dog was found in a nearby park with money and a suicide note. But widow Alena, a Ukrainian virologist, has denied he killed himself - saying 'there was no note, no suicide'. She claimed that an investigation has been launched into his death, but...