Todd Sandler holds the Vibhooti Shukla Chair in Economics and Political Economy at the University of Texas at Dallas. His research interests include transnational terrorism, global collective action, and treaty formation. His work on global public goods dates back to the 1970s. In 2003, he was the co-recipient of the National Academy of Sciences Award for Behavioral Research Relevant to the Prevention of Nuclear War for his theoretical and statistical analysis of terrorism. He is author of Global Challenges; Global Collective Action; and The Political Economy of Terrorism.