At the height of World War II, Frank Capra delivered a clear and inspiring answer in a series of government-sponsored documentaries collectively called Why We Fight
: "We're fighting for liberty, the most expensive liberty known to man." Fifty years later, documentarian Eugene Jarecki comes up with a far less idealistic answer. We fight, his film suggests, because in the 60 years since World War II ended, the American military industrial complex has become a vast machine for making tools of war, and we have to find something to do with them. We fight because a group of conservative policy makers (notably Vice-President-to-be Dick Cheney and future Deputy Secret...