On Friday June 17, the International Athletics Federation will decide if Russian athletes can take part in the Rio Olympics in August. Russia is at the centre of the world's largest-ever doping scandal, with politicians, coaches and athletes accused of involvement in falsifying samples and blackmailing sportsmen. A number of reforms have been introduced in Russia since the scandal broke. But will they be enough to allow the country's athletes to go for gold? Our correspondents report. A programme prepared by Patrick Lovett, Elom Marcel Toble and Claire Pryde.