A WEEK AFTER ESCALATING the war in Afghanistan, Obama flew to Oslo to receive the Nobel Peace Prize. To help him prepare the remarks he’d give at the ceremony, Obama had asked Jon Favreau and me to give him a selection of speeches and essays about war—John F. Kennedy speaking about the nature of peace and calling for a nuclear test ban treaty; Churchill, Roosevelt, and Lincoln at war; Mahatma Gandhi, Martin Luther King, Jr., and Reinhold Niebuhr.

