Book excerpt: British foreign policy has always been based on distinctive principles since the setting up of the Foreign Office in 1782 as one of the two original offices of state, the other being the Home Office. As a small island nation, Britain was historically fearful of over mighty continental powers, which might seek to menace its trade routes, and naval primacy was essential. Britain must dominate at sea while avoiding, involvement in major continental wars and Britain accomplished this successfully until the end of the 19th century. After World War II and the Cold War Britain was no longer the global naval super power and they had to adapt to a secondary, supportive role. This was to be based on its membership of regional defense and economic organizations in Europe. The Historical Dictionary of British Foreign Policy provides an overview of the conduct of British diplomacy since the setting up of the Foreign Office in 1782. This is done through a chronology, an introductory essay, appendixes, an extensive bibliography, and over 300 cross-referenced dictionary entries on British prime ministers, foreign secretaries, foreign office staff and leading diplomats, but also on related military and political-economic aspects. This book is an excellent access point for students, researchers, and anyone wanting to know more about British foreign policy.