Rex W. Douglass conducted research on Vietnam for the ESOC project (2009-2012), while he was a doctoral candidate in the Department of Politics at Princeton University. Douglass is currently a postdoctoral researcher with the Mathematics Department at the University of California, San Diego. His research focuses on subnational aspects of internal and international war. His dissertation asked why relatively wealthy governments do not defeat rebellions by selectively targeting threats and rewards at individual rank and file rebels. It examines three kinds of specific targeting institutions, selective targeting (assassination) programs, local community aid projects, and defector programs. He provides new theory regarding the role of these institutions in ongoing civil wars which he tests with a major new archive of data that he has recovered from the Vietnam War. Douglass received his PhD from Princeton University and his B.A. in political science and history from the University of Texas at Austin.