On Start the Week Lisa Jardine asks whether the writing of history has been dominated by conflict and difference. The Professor of History, David Cannadine argues against the predominant 'them and us' agenda, and for a common humanity. While the Balkan writer Aleksandar Hemon splits his life between Sarajevo and Chicago. Ed Vulliamy reported on the war in Bosnia and explores a journalist's role in historical events, and Margaret MacMillan discusses the teaching of history. Producer: Katy Hickman.