Body: "Political and diplomatic history" is the study of international relations and affairs with a focus on non-military state actors.
People study "Political and diplomatic history" in order to understand the history of international relations, learn about historical crises resolved through diplomacy, engage present problems through a diplomatic lens.
Some subfields in "Political and diplomatic history" include history of diplomacy, famous diplomats, international crisis resolved through diplomacy, framework for future diplomacy.
K. Weisbrode, David Bayne Horn, and Gordon Alexander Craig are some authorities of "Political and diplomatic history".