His previous work has been published in International Security, International Studies Quarterly, the Journal of Conflict Resolution, Security Studies, Intelligence and National Security, and the U.S. Army War College. Prior to joining Dartmouth's faculty, Jeff held academic fellowships at the Dickey Center for International Understanding, the Weatherhead Center for International Affairs, the Belfer Center for Science and International Affairs, and the Tobin Project. He has also held research positions at the World Bank, the Council on Foreign Relations, and the International Security Assistance Force-Afghanistan. Jeff's next book project is titled The Politics of Preventive Action: Explaining America's Divergent Reactions to Terrorism, Climate Change, and Other Major Risks.