One year ago, sprinter Krystsina Tsimanouskaya's life was upended when she refused to board a plane back to her native Belarus after being kicked out of the Tokyo Olympics by her team.
What began as a controversy over Tsimanouskaya's entry in the 4x400 metres relay snowballed into a defection that became one of the biggest stories of the Games and highlighted the pressure Belarusian athletes face for challenging authority.
