Prussian General Carl von Clausewitz famously wrote that ‘War is the continuation of politics by other means’. But what does Clausewitz mean to a world where economic, political and cultural conflicts are increasingly framed as wars? Written after the Napoleonic Wars but left unfinished at the author’s death and not published until 1832, On War is one of the most influential and important works on military strategy ever written.  This new edition presents this classic text with a new introduction by Graham Harman, who reads Clausewitz’s ideas about war, politics and military strategy through the lens of speculative realism.