Russia's long-serving finance minister says he will not serve in a new government if President Dmitry Medvedev becomes prime minister and Prime Minister Vladimir Putin wins the presidency next year.

Finance Minister Alexei Kudrin told reporters in Washington late Saturday that he has fundamental differences with the current president. He said the point was not that he had not been offered a job, but that if offered a position, he would decline.

Kudrin has been Russia's finance minister since 2000. He is in Washington to attend meetings of the Group of 20 finance ministers.