The head of the Russian Olympic Committee on Monday insisted his country had fulfilled conditions set by the IAAF after the federation voted to maintain its track and field doping ban.
The International Association of Athletics Federations voted at the weekend for the 11th time to uphold a ban first introduced in November 2015 after evidence of mass state-sponsored doping appeared.
Russia's participation at this year's Doha world championships remains on tenterhooks.
"The decision of the IAAF raises regrets," local Olympic committee head said Stanislav Pozdnyakov told the state TASS news agency.
"Even though the Russian side has absolutely fulfilled its obligations... the position of the International Federation has changed."