"The costs of coming out and saying the Russians did it would far outweigh the benefits, if there would be any benefits...
Double Olympic champion pole vaulter Yelena Isinbayeva called the decision "the funeral of athletics".
19 operators in Russia have been banned from tourist activities
Russia is buying heavily upgraded versions of older planes instead
The 33-year-old man was paralyzed in the incident earlier this week
The increase in the number of Russian visitors is attributed to discounted airfares.
At one point, the WADA-accredited anti-doping laboratory in Moscow destroyed 1,417 samples shortly before an inspection.