Radical theory has always been beset by the question of ontology, albeit to varying degrees and under differing conditions. In recent years, in particular, political metaphysics has returned with force: the rise of Deleuze-influenced "new materialisms," along with post-/non-Deleuzian Speculative Realism (SR) and Object-Oriented Ontology (OOO), all bear testament to this. In this same period, anarchism has returned as a major influence on social movements and critical scholarship alike. What, then, are some of the potential resonances between these currents, particularly given that anarchism has so often been understood/misunderstood as a fundamentally idealist philosophy? This special issue of Anarchist Developments in Cultural Studies (Issue 2013.2) considers these questions in dialogue with the new materialisms, Speculative Realism, and Object-Oriented Ontology, in order to seek new points of departure. It is in this sense that ADCS also strives to play a critical role recent discussions in the wider political, cultural, and philosophical milieu.