Should Russian athletes face Rio ban?
Russia was suspended from international competitions last November after a damming report by the World Anti Doping Agency (Wada).
It had found a culture of cheating and what it called state-sponsored doping.
The International Association of Athletics Federations (IAAF) now has to decide whether Russia has reformed enough for that ban to be lifted.
So what exactly have Russian athletes done wrong? Jim Reed reports.
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