A penetrating analysis of weaponized information-one of the most pressing dangers to open societiesNow more than ever, communities across the world are integrated into a complex, global information ecosystem that shapes the nature of social, political, and economic life. The ripple effects of actors trying to manipulate or disrupt this information ecosystem are far more severe than the primary effects that are merely being felt in the information space. In fact, the weaponization of narratives has already shown its potential to transform the character of conflict in the twenty-first century.Subversion examines how malicious state and nonstate actors take advantage of the information space to sow political chaos. Andreas Krieg reveals how the coordinated use of weaponized narratives can achieve strategic-level effects through a six-stage process. Preying on vulnerable states and communities to find the fault lines within societies, these campaigns begin in the information space with an ultimate goal of producing tangible results (such as changes to policy or voting behavior, or spurring political violence). Krieg closely examines recent subversion campaigns by two states in particular, focusing on Russia's interference in Western public discourse and the United Arab Emirates's demonization of the Muslim Brotherhood as a terrorist organization. Subversion will provide scholars and policymakers with a comprehensive understanding of one of the most urgent threats in international politics along with recommendations on how vulnerable communities can become more resilient.