The cost of the Winter Olympics in Russia has quadrupled to a record-breaking £30 billion following allegations of massive corruption. Reporter John Sweeney investigates claims that lucrative contracts have been handed to President Putin's friends, a... (more)nd that billions have been embezzled by fraudsters and corrupt officials. Despite the huge cost of the games, thousands of Olympic workers say they have not been paid, and some claim they were tortured by the police when they tried to protest. The games in Sochi are supposed to be a showcase for modern Russia, but what do they really reveal about President Putin's state?