Russia's long-term sovereign credit rating outlook was lowered yesterday (Thursday) - to negative - by Standard & Poor's Ratings Services due to their assessment that the cost of the government's "bank rescue operation'' may increase. S&P cut their outlook from stable, a move which reflects the increased probability of a downgrade at some point in the future. Russia has committed as much as 15 percent of gross domestic product in budgetary and reserve funds to maintain banking liquidity, according to calculations made by the rating agency. At the same time S&P affirmed Russia's BBB+ long-term foreign currency and the A- long-term local currency ratings and the short-term ratings of A-2.``We expect Russian corporate and financial sector default rates to increase asdebtors' access to official funds will vary,'' S&P said in the statement.``Other uncertainties remain regarding what the economic policy response will ...