The World Anti-Doping Agency (WADA) has referred the doping case involving Russian Olympic figure skater Kamila Valieva to the Court of Arbitration for Sport (CAS), WADA president Witold Banka said on Twitter on Tuesday. Banka said that despite putting the Russian Anti-Doping Agency (RUSADA) under formal notice to resolve Valieva’s case, “no progress was made. Therefore, I can confirm WADA has now officially referred it directly to the Court of Arbitration for Sport.” Valieva helped Russia win the team event gold at the Beijing Winter Olympics but it was later revealed that she had failed a do…