Why does this come out in a British paper?
Because the Brit newspapers have mostly reported what the American MSM would never do. This is an exception as there are pro-American reporters for the Telegraph and Mail like Don Surber.
Tim Stanley is a self-described US Historian and writing a book on Pat Buchanan. He seems all over the map - which might indicate he is not biased, but simply observing the chaos from afar; i.e. this article is semi-pro-Newt.