Geopolitics is a practice of knowledge production. As a result of its long history, it includes a wide range of explanations that can be arranged according to four major perspectives: (i) geopolitical representations in politics, media, and science; (ii) the geopolitical discourse itself as a formation of space power; (iii) the “doing geopolitics” of political actors who draw on hegemonic geopolitical imaginations in order to legitimize their political reasoning and practices; and (iv) the academic deconstruction of geopolitical discourses and practices from a critical geopolitical perspective, or rather a poststructuralist political geography.