Ari Weil is a graduate research associate and an incoming PhD student in political science at the University of Chicago. He serves as the Deputy Research Director for the Militant Propaganda Analysis team and is one of the inaugural Hagel Leadership Fellows. He joined CPOST in the winter of 2019 and worked on the Vectors of Radicalization team studying pathways to mobilization to ISIS and Al Shabaab. His current thesis work examines the spread of terrorist tactics, focusing on the use of vehicle ramming. He has previously held research assistant positions at National Defense University, Pomona College, and Claremont McKenna College, studying ISIS external operations, terrorism and revolution, and U.S. counterterrorism effectiveness, respectively. Ari received a BA in international relations from Pomona College, where he wrote a senior thesis on jihadist online personal branding that received the Inman Award in Intelligence Studies from the University of Texas. He received an MA in International Relations from the University of Chicago in June of 2020.