Occupant of the prestigious post of Professor of Modern Irish History at University College, Dublin, Diarmaid Ferriter is also a prolific author and ‘go-to’ historian for many radio and TV programmes. His first significant success was The Transformation of Ireland 1900–2000, and his biographical study of Eamon de Valera, Judging Dev, quickly followed. A Nation and not a Rabble: The Irish Revolution 1913–1923 dealt with the revolutionary generation which delivered Irish independence in 1922. Now Diarmaid has turned his attention to the recent history of a frontier that has come back into sharp focus in recent months. In The Border: The Legacy of a Century of Anglo-Irish Politics he examines the history of partition and of a frontier that Margaret Thatcher once complained was “full of kinks and wiggles”.