This site serves as a gateway to theories and concepts in International Relations. It is designed as an introductory guide – a starting point that offers concise overviews, core ideas, and initial references. It should not be cited in academic work; instead, users should always consult and reference original scholarly sources when writing. The site is a project of the Ghent Institute for International and European Studies (GIES), created to support students, the general public, and policymakers around the world.