Responding to the article, Boris Johnson said: "Grateful as I always am to Andy for career advice, I am backing David Cameron all the way."
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The arrests were made on suspicion of producing and disseminating pedophilia content on the internet, the country's Justice Ministry said.
The A4-sized sketch originally went for £75 when it was first sold.
Ex-White House adviser Steve Bannon has described George W Bush as bumbling and inept, criticising his "destructive" presidency.