Fiddler on the Roof - last seen in London last year when the Menier Chocolate Factory revival transferred to the West End's Playhouse Theatre - is indisputably one of the greatest of all Broadway musicals. It's a sweeping, soaring tale of the circumstances that led to the diaspora of Eastern European Jews out of Russia, some of whom in the show are said to be emigrating to America. It had a book by Joseph Stein; 22 years after its 1964 Broadway opening, Stein returned to the theme in another...