# Iceland Conducts National Security War-Gaming for AMOC Collapse Icelandic officials simulate the systemic risks of Atlantic current failure on national stability. - **Source:** [Gizmodo](https://gizmodo.com/) - **Published:** 2026-11-02 - **Topic:** [Business](https://brifing.si/c/business) - **Original article:** - **On Brifing:** https://brifing.si/s/f9700f68-4923-4da8-b140-91f7bce18677 ## Strategic Climate Risk Assessment Icelandic government officials convened on October 15th to conduct a formal war-gaming exercise focused on the potential collapse of the Atlantic Meridional Overturning Circulation. Unlike traditional defense drills targeting cyberattacks or territorial incursions, this session prioritized climate-induced existential threats, marking a significant shift in how the nation defines its core national security. ## Understanding AMOC Mechanics The AMOC system functions by transporting warm surface water northward while pushing colder, saltier water southward through thermal convection. Rising global temperatures threaten this cycle, which is essential for maintaining regional climates. Disruption of this mechanism could trigger extreme temperature drops in Scandinavia, potentially reaching winter lows of -50 degrees Celsius. ## Global Impact and Vulnerabilities Beyond northern Europe, an AMOC collapse would disrupt equatorial regions by weakening monsoon seasons in India and West Africa. Research indicates that climate-related disasters already push approximately 26 million people into poverty annually. These systemic shifts threaten global food security and water access, creating a complex web of interconnected international crises. ## Governmental Preparedness Gap Despite the severity of the threat, only two of 91 countries submitting national adaptation plans to the United Nations have formally addressed AMOC risks. Brazil highlighted potential Amazon rainforest collapse, while Ireland noted that adaptation strategies might prove insufficient. Iceland, despite conducting these specific security exercises, has not yet submitted its own plan. ## Historical Precedents of Disruption Climate researchers note that radical changes to Atlantic currents are not unprecedented in Earth's history. Studies indicate a near-total halt of the AMOC occurred approximately 17,500 years ago, followed by another sharp decline during the Younger Dryas period around 12,700 years ago. These historical events provide critical data for current predictive climate modeling. ## Focus on National Resilience Icelandic planners are specifically evaluating food security, critical infrastructure integrity, and international transportation logistics in the event of a current collapse. Minister Jóhann Páll Jóhannsson emphasized that identifying these vulnerabilities is essential for strengthening national resilience. This approach mirrors the government's established protocols for managing volcanic eruptions and public health epidemics. ## Collaborative Analytical Framework The October exercise represents the fourth in a series of collaborative efforts involving University College London’s Climate Action Unit and the University of Exeter’s Global Systems Institute. By mapping specific vulnerabilities through these simulations, officials aim to determine which sectors require the most urgent reinforcement to withstand potential long-term environmental shifts. ## Existential Threat Recognition This initiative marks the first time a specific climate phenomenon has been formally presented to Iceland’s National Security Council as an existential threat. By treating climate risks with the same gravity as traditional military threats, Iceland is setting a precedent for how sovereign nations might integrate long-term environmental instability into their national security. ## Sources covering this story - https://gizmodo.com/iceland-is-war-gaming-an-ocean-current-collapse-2000833638 — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._