The global governing body for athletics on Wednesday stood behind its ban on Russia's track and field athletes competing at the Rio Olympic Games, ­effectively leaving all paths trodden in Moscow's ­attempts to get them readmitted.

The International Association of Athletics Federations (IAAF) imposed the ban in November for systematic state-sponsored doping.

The Court of Arbitration for Sport (CAS) upheld that decision last week.

Russian Sports Minister Vitaly Mutko wrote to the IAAF on Monday to get the ban overturned. But there were "no grounds for further review," the organization said Wednesday.

"The applications by 68 athletes for eligibility to compete in Rio were ­assessed carefully and on an individual basis by the IAAF Doping Review Board," the IAAF said in a statement.

"Only [long jumper Darya Klishina] ... was found to meet the criteria for ­exceptional eligibility. CAS considered the ­appeals of the [other] 67 athletes fully and rejected them."

The International Olympic Committee rejected calls to impose a ­blanket ban on Russians competing at the Rio Games after the independent ­McLaren report found evidence of state-­sponsored ­doping in the Sochi 2014 Winter ­Olympic Games.

Putin on Wednesday blamed a ­shadowy campaign for unfairly ­stripping some Russian athletes of the right to compete at the Rio Games over doping allegations, hitting out at what he called short-sighted political schemers.

Putin, addressing members of ­Russia's Olympic team in the Kremlin, said that the decision by international sporting organizations to ban some ­Russian athletes from the Games flew in the face of common sense and legality.

"The deliberate campaign targeting our athletes was characterized by so-called double standards and opted for the idea of collective responsibility, which is not compatible with sport, justice in general, or the basic norms of law," said Putin.

The Russian leader said the scandal, which centers on allegations that the Russian government and the FSB ­security service systematically ­covered up doping for years, had unfairly ­targeted many Russian athletes who had not even faced specific and proven accusations.

Putin said any medal won in Rio in the absence of Russian athletes would be worth much less than otherwise and that such victories would have a completely different taste.