Maybe because it's not a "sports" story? Every now and again I hear people getting caught with illicit substances in certain countries. Don't do it. You want to get high in russia... maybe try vodka?
You've heard about this a lot because it is a common thing for the police in many parts of the world to plant drugs on foreigners so they can arrest them.
If that were true then the correct course of action would be to stop doing sports in despotic countries