As a prelude to the NAC Orchestra's UK Tour -- a tour of commemoration and remembrance -- Nick speaks with renowned historian Margaret MacMillan about Canada and its role in the First World War.

Prof MacMillan, is an historian and professor at the University of Oxford, where she is Warden of St Antony's College. She is former provost of Trinity College, professor of history at the University of Toronto and Ryerson University. A leading expert on history and international relations, MacMillan is a frequent commentator in the media. [wikipedia.org]