Keith Jeffery is Professor of British History at Queen's University, Belfast, and a Member of the Royal Irish Academy. In 1998, he was the Lees Knowles Lecturer in Military Science at Trinity College, Cambridge, and in 2003-4, Parnell Fellow in Irish Studies at Magdalene College, Cambridge. He is the author of fourteen previous books, including MI6: The History of the Secret Intelligence Service 1909-1949. Keith Jeffery lives in Northern Ireland.