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The New Terrorism and Evolving Security Threats
The Cato Institute on U.S. counterterrorism strategy and homeland security, https://www.cato.org/research/counterterrorism-homeland-security
The Carnegie Endowment for Peace, http://carnegieendowment.org/topic/
U.S. National Counterterrorism Center, http://www.nctc.gov/
International Atomic Energy Agency, https://www.iaea.org
National Consortium for the Study of Terrorism and Responses to Terrorism
RAND database https://www.rand.org/nsrd/projects/terrorism-incidents.html
Hezbollah https://carnegie-mec.org/2015/06/05/hezbollah-s-ascent-and-descent-pub-60327