Sir Francis Bertie (from 1915 Lord Bertie of Thame) was a senior British diplomat of the late Victorian and Edwardian eras. He is perhaps best known for the thirteen years between 1905 and 1918 during which time he was Britain's ambassador in Paris, and it is with this period of his life that Dr Hamilton is mainly concerned. The book thus examines his contribution to the evolution and maintenance of the entente cordiale, the nature of his 'anti-Germanism', his influence upon Sir Edward Grey and other British statesmen, and the eclipse of professional diplomacy during the first world war. Above all it is a study of a man whom another British diplomat was later to describe as 'the very last of the great ambassadors'.