The World Anti-Doping Agency has dropped a defamation lawsuit against its American counterpart, a major retreat for the agency after nearly a year of escalating conflict over its handling of positive tests for a banned drug by 23 elite Chinese…

The World Anti-Doping Agency has dropped a defamation lawsuit against its American counterpart, a major retreat for the agency after nearly a year of escalating conflict over its handling of positive tests for a banned drug by 23 elite Chinese…