Apparently the IOC’s Olympic Charter gives it the right to exclude countries if “….the relevant International Federation governing such sport does not comply with the Olympic Charter or the World Anti-Doping Code.”
As reported earlier, recent TV documentaries aired by German station ARD have suggested that perhaps 99 percent of Russian athletes are doping at international competitions. There have also been allegations of systematic doping with Kenyan and Turkish athletes.
WADA hopes to improve things stating, “The Agency does however continue to work collaboratively with all signatories to improve their anti-doping programmes so that consistent, quality, anti-doping programmes are in place for the protection of athletes worldwide.”
Past examples of countries banned for doping offences seem very rare according to Inside the Games, citing only two cases that involved Nigeria and the United Arab Emirates.