International relations History (Topical Term)

Palgrave advances in international history, 2005: p. 1 ("diplomatic history' evolved into "international history", expanding beyond diplomacy to economics, strategy, domestic sources of foreign policy, ideology/propaganda, and intelligence) p. 2 (many North American scholars prefer tradition term "diplomatic history"; alternative, "foreign relations history"; "international history" remains most generally recognized)

Encyc. of historians & historical writing, 1999 ("diplomatic history" or "international history" is the study of the history of international relations, including all forms of political interactions between states, incl. treaties, wars, trade. It differs from international relations discipline, which is concerned largely with contemporary diplomacy or theoretical models to explain international system)