Dr. Graig R. Klein

His research explores the instrumentality of political violence, primarily terrorism and protests, and how dissident-government interactions inform tactical and strategic evolution in conflict processes, international security, and national security.

Graig R. Klein is an Assistant Professor at the Institute of Security and Global Affairs (ISGA) at Leiden University. Previously, he was an Assistant Professor of security studies at New Jersey City University and served as an Academic Primary Investigator at the World Bank. His research is published in leading international peer-review journals, including, International Organization, Conflict Management & Peace Science, and Terrorism & Political Violence. At the core of his research is investigating and analysing complex socio-political phenomena and threats of violence using a variety of statistical and big-data analytical tools. Graig obtained his PhD in Political Science from Binghamton University, holds an MA in International Peace and Conflict Resolution from American University, and a BA in Political Science from Binghamton University.


Dr. Graig R. Klein
Leiden University
Senior Researcher

Key publications

Klein, G. R. (2022). The Leader of ISIS is Dead, but Are Targeted Killings Effective? International Centre for Counter-Terrorism, Feb. 10, 2022. 

Klein, G. R. (2021). Refugees, Perceived Threat & Domestic Terrorism. Studies in Conflict & Terrorism.

Tokdemir, E. & Klein, G. R. (2021). Strategic Interaction of Governments and Terrorist Groups in Times of Economic Hardship. Defence and Peace Economics, 32(6), 742-756.

Klein, G. R. & Regan, P. M. (2018). Dynamics of Political Protests. International Organization, 72(2), 485-521.

Klein, G. R. (2016). Ideology Isn’t Everything: Transnational Terrorism, Recruitment Incentives, and Attack Casualties. Terrorism and Political Violence, 28(5), 868-887.

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