The prime minister must ask himself whether he is man or mouse. His place in history is assured as the leader who made the Tories (nearly) electable again, an achievement that eluded three previous leaders. But does he want to be another Harold Macmillan, presiding over a dignified slide towards insignificance? Or is there somewhere inside his heart – an organ that still remains impenetrable to most Britons – a trace of Thatcher, determined to reverse the direction of our ship?
Conservative MP and former environment minister Tim Yeo urges David Cameron to abandon his objections  to building a third runway at Heathrow.