Mario Monti faced down the German chancellor and won the battle. He will survive a few more weeks or months in politics. It was clever of him to threaten a veto on something Angela Merkel badly needed. He had her in the corner. It was an example of classic EU diplomacy.

But this was only the foreground spectacle. If you look behind the curtain, you will find that, for Italy at least, nothing has changed at all. The European Stability Mechanism was already able to purchase Italian bonds in the open market. The instrument was there, but not used. The agreed changes are subtle. Italy must still sign a memorandum of understanding, and subject itself to the troika – the International Monetary Fund, the European Central Bank and the European Commission. The procedure will be less invasive, more face-saving. But there will still be a procedure.

The real constraint for ESM bond purchases had less to do with the rules than with the overall size limit of the ESM. It has a lending capacity of €500bn – and that has not changed. No matter how you twist and turn it, the ESM is simply not big enough. It will inject equity into Spanish banks. It will need to refinance the programme for Greece, Ireland, and Portugal. It will soon have to cope with Cyprus and, who knows, maybe Slovenia as well. A full-scale programme for Spain still looks likely. I cannot see how you can fit Spain under the umbrella, plus Italian bond purchases.