Europe's leaders have finally run out of time. If they fail to agree on some form of debt pooling and shared fiscal destiny at Thursday's emergency summit, they risk a full-fledged run on South Europe's bond markets and a disorderly collapse of monetary union. "We are heading towards fiscal union or break-up," said David Bloom, currency chief at HSBC. "Talk is no longer enough as the fire threatens to leap over the firebreak into Spain and Italy. "What the market is worried about is Germany's long-term committment to the euro project. If we see unreserved and absolute backing from the...