Pulitzer Prize winning humanitarian Samantha Power offers an urgent response to the question "What can one person do?" In this memoir, Power transports us from her childhood in Dublin to the streets of war-torn Bosnia to the White House Situation Room and the world of high-stakes diplomacy. In 2005, her critiques of U.S. foreign policy caught the eye of newly elected senator Barack Obama, who invited her to work with him on Capitol Hill and then on...