Terrence OSullivan

Associate Professor
Office: Dept of Security Studies, Huddleston Hall Room 305, Durham, NH 03824
Pronouns: He/him/his
Terrence Sullivan

Terry O’Sullivan, PhD, MAAS, is Associate Professor in the University of New Hampshire at Manchester’s Security Studies program. His teaching, research, and publications concentrate in domestic and international security studies, broadly writ, including pandemic disease, the climate/global heating crisis, community disaster resilience, terrorism, weapons of mass destruction, and the theoretical, policy and practice-level integration of homeland security and other security frameworks.


  • Ph.D., University of Southern California
  • M.A., Master of Arts in Architectural Studies, University of California - Los Angeles
  • B.S., St. Lawrence University

Research Interests

  • Biosecurity
  • Climate change
  • Climate Change - Impacts
  • Climate Change - Mitigation
  • Cybersecurity
  • Electric/Power Grid - Security
  • Energy Security
  • Homeland Security
  • Human Dimensions of Climate Change
  • Human security
  • Infectious Diseases/Agents
  • International Security
  • National security
  • Public Health
  • Security; infrastructure protection, resilience; cyber crime, security, resilience; intelligence; law enforcement; threat assessment
  • Weapons of Mass Destruction

Courses Taught

  • 505: Political Violence and Terror
  • 515: Infrastruct Sec & Resilience
  • 580: Environmental Security
  • 695: IndStdy/Human/EnviroSecurity
  • 760: Strat Planing & Decision Mkg
  • HLS 455: Introduction to Cybersecurity
  • HLS 515: Infrastruct Sec & Resilience
  • HLS 580: Environmental Security
  • HLS 695: IndStdy/Environmental Security
  • HLS 760: Strat Planing & Decision Mkg

Selected Publications

O'Sullivan, T., & Ramsay, J. (2019). Energy Security. In J. Lanicci, E. H. H. Murray, & J. Ramsay (Eds.), Environmental Security Concepts, Challenges, and Case Studies. American Meteorological Society Publications.

O'Sullivan, T. M. (2015). Environmental Security is Homeland Security: Climate Disruption as the Ultimate Disaster Risk Multiplier. Risk, Hazards & Crisis in Public Policy, 6(2), 183-222. doi:10.1002/rhc3.12084

O’Sullivan, T. M., & Ramsay, J. (2015). Defining and Distinguishing Homeland from National Security and Climate-Related Environmental Security, in Theory and Practice. Journal of Homeland Security and Emergency Management, 12(1). doi:10.1515/jhsem-2014-0003

O’Sullivan, T. M., & Emmelhainz, R. (2014). Reframing the Climate Change Debate to Better Leverage Policy Change: An Analysis of Public Opinion and Political Psychology. Journal of Homeland Security and Emergency Management, 11(3). doi:10.1515/jhsem-2013-0117

Ramsay, J. D., & O'Sullivan, T. (2013). There’s a Pattern Here”: The Search for a Theoretical Framework for Modern Homeland Security and the Case of Environmental Security”.. Homeland Security Affairs, (spring).

von Winterfeldt, D., & O'Sullivan, T. M. (2006). Should We Protect Commercial Airplanes Against Surface-to-Air Missile Attacks by Terrorists?. Decision Analysis, 3(2), 63-75. doi:10.1287/deca.1060.0071