Dr. Dianne Pfundstein Chamberlain is an associate research fellow with the Arnold A. Saltzman Institute of War and Peace Studies, Columbia University.  She was previously an assistant professor in the department of political science and Commonwealth Honors College at the University of Massachusetts, Amherst, and a postdoctoral research fellow in the International Security Program at the Belfer Center for Science and International Affairs, Harvard Kennedy School.  She holds a PhD in political science from Columbia University and a BA in economics and political science from Williams College.  Her first book, Cheap Threats:  Why the United States Struggles to Coerce Weak States, was published by Georgetown University Press in March 2016.  Her work has also been published at The National Interest online and War on the Rocks.