Moscow: The International Association of Athletics Federations (IAAF) will keep its "zero tolerance" doping policy as it strives to shake off cheating allegations, vice president Sergei Bubka of the world athletics governing body said Wednesday.

"Our clear policy is zero tolerance for doping," Bubka told AFP at the inaugural gathering of the world's Olympic associations in Moscow. "We must defend the interests of honest and clean athletes." In August, German television television channel ARD and Britain's Sunday Times newspaper said they had been leaked a database belonging to the IAAF with details of 12,000 blood tests from 5,000 competitors that revealed "extraordinary" levels of doping.