The mood of the French public right now is very far from sunny. The economy is barely growing, unemployment is high, and voters are fed up with politics as usual. All of which is fuelling the popularity of the far right National Front, led by Marine Le Pen. Stephen Sackur speaks to her father, Jean-Marie Le Pen, the founder of the National Front. Father and daughter used to be the closest of allies but now are at war with each other. It is a compelling soap opera but what does it say about the changing face of the far right?