The Conservative Party has changed since then, as the revolt by the 81 Tories who voted for a European Union referendum in October showed. Before the Brussels summit, there were even threats of a leadership challenge.
Cameron's problem is that the Tory Europhobes are never satisfied. Although they don't admit it, the hardliners see his veto as the start of a process leading to Britain's EU exit.
In another era, Britain's "special relationship" with the United States would have given it another option. The Obama Administration sees Britain as one player in Europe; the danger now is that it is a small rather than a big one. France and Germany will matter more because they will lead a group of 26.
The forces Cameron has unleashed may well end in a referendum after the next general election.
Although the public might like his posturing now, I am not sure they would vote to withdraw from the EU.
A strong business lobby would remind people that three million jobs would be at stake. At some point, Cameron is going to have to stand up to his party rather than pander to it.
BIG NAMES SPEAK UP
Voices from the Liberal Democrats:
Paddy Ashdown, former Liberal Democrat leader:
"We have tipped 38 years of British foreign policy down the drain in a single night. We have handed the referendum agenda to the Eurosceptics. [John] Major had the courage to stand up to his bastards. It pains me to say it, but [David] Cameron has acted as the leader of the Conservative Party and not the Prime Minister of Britain."
Simon Hughes, Liberal Democrat deputy leader:
"[Eurosceptics] should calm down. There will not be an opportunity for them to pull us further away from Europe. That's off the table."
Vince Cable, Liberal Democrat Business Secretary:
"I am not criticising the Prime Minister personally. Our policy was a collective decision by the Coalition. We finished in a bad place."
- Independent