This symposium explores the value of Poststructuralist (or Political) Discourse Theory (PDT) for the analysis of world politics. PDT was originally developed by the late Argentine political theorist Ernesto Laclau, in early works together with Chantal Mouffe, and has entered the margins of International Relations (IR) in recent years, mainly by bringing in poststructuralist concepts that had previously been ignored by the more critical strands of theorizing. Against this background, the introduction (1) discusses the disconnect between PDT and research on (...) world politics, primarily in IR, as well as PDT’s potential contribution, (2) provides an overview of PDT’s central theoretical tenets, in particular with respect to its social ontology and its theoretical concept of change, and (3) introduces the contributions to the symposium. (shrink)