The International Monetary Fund said shortly after midnight Wednesday that Greece had missed a crucial debt payment to the fund. “We have informed our executive board that Greece is now in arrears and can only receive I.M.F. financing once the arrears are cleared,” said Gerry Rice, a spokesman for the fund. Greece is not technically in default, but missing the payment is yet another an unmistakable warning that the country will probably be unable to meet its other obligations in coming weeks, to its bond holders and to the European Central Bank . That may might make the European Central Bank, one of its principal creditors, less willing to continue emergency loans […]