Subscribe to BBC News Subscribe Check out our website: Facebook: Twitter: Instagram: This is a story how Oleg Deripaska, a Russian billionaire, helped save Sochi stray dogs. In the run-up to Sochi's Winter Olympics, hundreds of stray dogs roamed around what is now the Olympic Park and authorities threatened to have them put down. The BBC's Daniel Sandford reports on what has happened to the city's strays.
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