We journalists are probably too bleary-eyed after a sleepless night to understand the full significance of what has just happened in Brussels. What is clear is that after a long, hard and rancorous negotiation, at about 5am this morning the European Union split in a fundamental way.
In an effort to stabilise the euro zone, France, Germany and 21 other countries have decided to draft their own treaty to impose more central control over national budgets. Britain and three others have decided to stay out. But whether the agreement does anything to stabilise the euro is moot.