| NATO and the Bomb E Simpson McGill-Queen's Press-MQUP, 2001 | 41 | 2001 |
| The principles of liberal internationalism according to Lester Pearson E Simpson Journal of Canadian Studies 34 (1), 75-92, 1999 | 32 | 1999 |
| In good faith: Canadian churches against apartheid R Pratt Wilfrid Laurier Press, 2006 | 29 | 2006 |
| New Ways of Thinking about Nuclear Weapons and Canada’s Defence Policy E Simpson | 13 | 1998 |
| Sustainable development goals worth sharing E Simpson OIDA International Journal of Sustainable Development 9 (03), 115-122, 2016 | 7 | 2016 |
| The Contributions of Anatol Rapoport to Game Theory E Simpson | 6 | 2016 |
| The New US Doctrine of Preemptive Warfare and Its Implications for Nuclear Deterrence and Disarmament E Simpson The Challenge of Abolishing Nuclear Weapons, 141-154, 2017 | 5 | 2017 |
| The Responsibility to Protect: A Seminar on the Report of the International Commission on Intervention and State Sovereignty E Simpson | 5 | 2002 |
| Canada's NATO Commitment: Current controversies, past debates, and future issues E Simpson Behind the Headlines, 2000 | 5 | 2000 |
| Nothing monotonous about drones now E Simpson | 4 | 2015 |
| New Threats to the Alliance's Security and Strategies to Reform NATO E Simpson The Transatlantic Quarterly, 2005 | 4 | 2005 |
| Games, Strategies, and Human Security E Simpson | 4 | 2001 |
| How to de-escalate dangerous nuclear weapons and force deployments in Europe FS Pearson, E Simpson International Journal 77 (1), 125-136, 2022 | 3 | 2022 |
| Where was Canada? E Simpson | 3 | 2017 |
| Nuclear waste burial in Canada? The political controversy over the proposal to construct a deep geologic repository E Simpson Journal of Nuclear Energy Science & Power Generation Technology 5 (3), 1-6, 2016 | 3 | 2016 |
| Evidence of Heavy-handed US Diplomacy in Europe affects NATO’s Intentions in Ukraine and NATO’s Strategic Concept E Simpson International Journal Advances in Social Science and Humanities 4 (2), 75, 2016 | 3 | 2016 |
| Threats to the Nuclear Non-Proliferation Treaty E Simpson | 3 | 2005 |
| Canada's contrasting alliance commitments and the underlying beliefs and assumptions of NATO defenders and critics. EV Simpson | 3 | 1996 |
| Game Theory and Peace Research: Professor Anatol Rapoport’s Contributions E Simpson In Factis Pax: Journal of Peace Education and Social Justice 12 (1), 38-58, 2018 | 2 | 2018 |
| Professor Anatol Rapoport’s Contribution to Game Theory and Peace Research E Simpson In Factis Pax: Journal of Peace Education and Social Justice 12 (1), 38, 2018 | 2 | 2018 |
