The philosophical genealogy of a remarkable antagonist: the pirate, the key to the contemporary paradigm of the universal foe. The pirate is the original enemy of humankind. As Cicero famously remarked, there are certain enemies with whom one may negotiate and with whom, circumstances permitting, one may establish a truce. But there is also an enemy with whom treaties are in vain and war remains incessant. This is the pirate, considered by ancient jurists considered to be 'the enemy of all.' In this book, Daniel Heller-Roazen reconstructs the shifting place of the pirate in legal and political thought from the ancient to the medieval, modern, and contemporary periods presenting the philosophical genealogy of a remarkable antagonist. Today, Heller-Roazen argues, the pirate furnishes the key to the contemporary paradigm of the universal foe. This is a legal and political person of exception, neither criminal nor enemy, who inhabits an extra-territorial region. Against such a foe, states