The Ridley Scott- directed film "Napoleon" is a big film. Big battle scenes.  Moscow going up in flames. Napoleon facing down his detractors. The over-the-top coronation of the emperor. But according to the noted Oxford Napoleonic historian, Michael Broers, the film's emphasis on Napoleon's relationship with Josephine is as important as those other "big" elements. Broers, who acted as film consultant for Scott, says the director was correct to focus on the relationship because it was the most important part of Napoleon's personal life. Listen in as Michael Broers discusses reaction to the film and Napoleon's fateful decisions to invade Russia.