Francesco Guicciardini (1483-1540) was an Italian historian and statesman who served in the Florentine and papal diplomatic services and was the author, among other works, of the landmark History of Italy (Storia d’Italia), a foundational work on statecraft and grand strategy which combined careful historical research with general theorizing about the ethics and practices of international behavior. The Francesco Guicciardini Prize is given annually and recognizes the best book copyrighted in the previous calendar year on subjects related to historical international relations. The award is not intended for books written by disciplinary historians. Nor does it see History as a particular technique, such as the use of archives and other primary sources. Rather, it is aimed at histories of international relations and/or the use of history to illuminate theoretical, conceptual and analytical issues in IR. This year's prize will be open to books with a copyright of 2020 or 2021.