The Lisbon treaty is now EU law and unless Cameron envisages a campaign to withdraw Britain from the EU he would be well advised from his point of view to move on.
Yet who am I as a socialist to advise Cameron? I wish only for the Tories, now waiting in the wings to inflict terrible cuts on ordinary working people, to weaken themselves through pointless bickering about the EU.
So perhaps I should change my advice. Yes, hold a pointless referendum, argue about the EU and the Lisbon Treaty, while unemployment and poverty grows in Britain.