Profile - Sir Roderic Lyne

Starting next week some of those most closely involved in the decision to go to war in Iraq will be appearing before the Chilcot Inquiry. Mary Ann Sieghart profiles Sir Roderic Lyne, the Iraq Inquiry panellist who is asking the toughest questions. He is a former Ambassador to Moscow and private secretary to John Major. Alastair Campbell has been a running buddy. So how tough will Sir Roderic be with his friends and former colleagues?