The European Central Bank is ready to take all measures available to contain undesired financial effects of the Greek debt crisis but it cannot prop up Greek banks much longer, ECB Governing Council member Ignazio Visco said on Wednesday. In a speech in Rome Visco, who is governor of the Bank of Italy, said the outcome of negotiations between Athens and its creditors remained "profoundly uncertain" after inconclusive talks in Brussels on Tuesday. Visco said the ECB, which has been providing cash-strapped Greek banks with emergency liquidity, could not continue to support them for long without progress on a cash-for-reforms deal at the political level.