Dr Stephen Twigge is Head of Modern Collections at The National Archives. He was previously a historian at the Foreign and Commonwealth Office and is a Fellow of the Royal Historical Society. He has published a number of books and articles on cold war history including German Unification 1989-90, Berlin in the Cold War 1948-1990, British Intelligence, Avoiding Armageddon and Planning Armageddon.The National Archives at Kew is the repository of documents that record the history of the UK. Events revealed through these papers are both large and small, ranging from momentous political events to day to day happenings in the lives of ordinary individuals.