Standard & Poor's ratings agency has downgraded France's credit rating, French television channels reported on Friday, citing a government source. EU building flags brussels EyesWideOpen | Getty Images The channels did not provide further details. S&P warned in December that it could downgrade the credit ratings of several euro zone nations if European leaders failed to find a lasting solution to the debt crisis at a meeting of EU leaders that month. Several euro zone countries including France face an “imminent” downgrade by ratings agency S&P, Reuters and Dow Jones news agencies reported, sending the euro to a session low...