All U.S. presidents, regardless of their background, serve as commanders-in-chief of the nation’s military. In this program, author Andrew Polsky analyzes the wartime decisions of several U.S. presidents, from Abraham Lincoln to Barack Obama. He argues that a president’s actions at the onset of war can determine its outcome. He also contends that as a war continues, presidential involvement can become less effective -- and even disastrous. The New York Military Affairs Symposium in New York City hosted this event.