<a href="http://www.hks.harvard.edu/about/faculty-staff-directory/matthew-baum">Matthew A. Baum</a> is the Marvin Kalb Professor of Global Communications and professor of public policy at Harvard University. He is coauthor of “<a href="http://press.princeton.edu/titles/9084.html">War Stories: The Causes and Consequences of Public Views of War</a>,” published by Princeton University Press in 2010.