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Gallis, Paul. "NATO in Afghanistan: A Test of the Transatlantic Alliance." Connections: The Quarterly Journal 6, no. 3 (2007): 10-32.

Archick, Kristin, Paul Gallis, Francis T. Miko, Steven Woehrel, and Carl Ek. European Approaches to Homeland Security and Counterterrorism. Washington, D.C.: Congressional Research Service, 2006.