"No-one thinks the eurozone crisis is over or that European leaders did enough last week to rule out nasty surprises in the next few weeks, but talking to officials, economists and analysts closer to the trading floor in the last few days, something has changed that I'm going to take as a sliver of good cheer.
What's new is that the people closest to the markets are no longer the most pessimistic.
For most of the past six months the opposite has been true. Bankers and those closest to the money markets have been more frightened, more quickly, about Europe's financial system and its economy. The rest of the world has then followed them down.
The money men probably reached the slough of their despond towards the end of November. That was when some were starting to seriously question whether Italy was losing access to the financial markets and when the lack of official activity in the wake of the Cannes Summit had become painfully apparent.
Don't get me wrong: those same analysts and traders are still gloomy today and they're still nervous of what's to come, but the air of barely-suppressed panic has subsided.
If you ask them why, they will tell you it's all in the tail: the "tail risks" that loomed so large a few weeks ago have receded.
What does that mean in plain English? It means that a truly catastrophic disaster, for example a wholesale freezing up of financial markets following a massive bank failure, or a run on banks, looks less likely to happen next week or next month than it did before. It's not impossible, but it's much less likely.
Does that mean that the eurozone governments did something important after all and that the summit was a secret success? The answer is no.
Part of the credit for this change of mood goes to the US and relatively good news about the US recovery, but most of the credit has to go to the world's leading central banks, including the ECB.
It is they who have once again stepped in with more liquidity life support to keep the patient stable while governments continue to struggle to come up with a cure.
On this telling, the co-ordinated central bank action on 30 November marked a turning point. That, followed by the more generous lending facilities for banks announced by both the Bank of England and the ECB, have sent an important signal to the financial system: that the authorities are willing to do a lot to avoid an important financial institution running out of money.
As Robert Peston has noted, this is still quite possible, but the Italian and other banks that have caused so much concern do now have somewhere to go when no-one wants to lend to them, and when the assets they've got left to put up as collateral (small business loans, for example) are not the kind that central banks (or anyone else, for that matter) will usually accept.
Now such institutions can go to their national central banks for support.
It's true that the ECB has insisted that the credit risk for this kind of lending - lending in exchange for illiquid collateral - should remain on the national central bank's balance sheet, not be carried by the euro-system as a whole.
But it has permitted that lending to happen, and it will fund it.
As I said last week, that means
the ECB has become even more of a lender of last resort than it was before."
http://www.bbc.co.uk/news/business-16137955