Dear Mr Cameron, welcome young friend. Welcome to America. Bring your bright, dashing self to our shores. Speak your piece with affection and modesty and go home a wiser man.
As for your own leadership, here is some advice. Do not imitate Mr Obama. He has been a disappointment; learn from his mistakes. America is not Britain and Britain is not America, but the culture of our politics – the polls, the imagery, the fixation on sound bites, the nonsense, the essential shallowness of presentation and of thinking, the inability of political figures to think long term – has grown similar. To your detriment, by the way.

