Is it right for historians to serve as 'expert witnesses' to past events? Since the end of the Cold War, a series of heated and politicised debates across Europe have questioned the 'truth' about painful episodes in the twentieth century. From the Holocaust to Srebrenica, inquiries and fact-finding commissions have become a common device employed by governments to deal with the pressure of public opinion. State-sponsored programmes of education and research attempt to encourage a common moral understanding of the lessons we learn from these painful memories. Contemporary historians have...