Why a Belarusian Olympic sprinter refused to fly home

The Belarusian Olympic sprinter Krystsina Tsimanouskaya flew out of Tokyo on Wednesday to begin a life in exile after refusing to return home. Andrew Roth describes a growing threat to internal critics of the regime. Help support our independent journalism at <a href="https://www.theguardian.com/infocus">theguardian.com/infocus</a>