Climate change is no longer just an environmental issue; it is a fundamental driver of national security risks that disrupts military readiness, infrastructure, and global stability [2] [3] [11].
The Threat Multiplier
Global policymakers now classify climate change as a "threat multiplier" that exacerbates existing tensions, degrades supply chains, and threatens financial markets [3] [4]. Rising temperatures and extreme weather events, such as the 150 million hectares burned globally in early 2026, demand integration into formal defense assessments [3] [10].
Military Impacts and Readiness
Armed forces face direct operational challenges, including:
- Infrastructure Damage: Rising sea levels, heatwaves, and flooding threaten critical bases and Arctic installations [12] [13].
- Operational Demands: Frequent disaster response missions place unsustainable strain on personnel and equipment [12] [13].
- Resource Security: Disruptions to water and energy supplies impact long-term strategic resilience [11] [16].
Policy and Future Outlook
NATO and national governments are increasingly mandating climate-smart defense investments, emphasizing that failing to adapt to climate risks undermines national sovereignty [11] [16]. Simultaneously, critics highlight the contradiction of high military carbon footprints—often excluded from global reporting—which further accelerate the climate crisis they seek to manage [12] [18] [19].
Sources
- Climate security – Wikipedia
- The Military and Climate Change "Threat Multiplier" – 21st Century …
- Montréal Climate Security Summit 2026 – NATO Climate Change & …
- Climate Change as a Threat to Global Peace and Security
- The US military’s fatal stance on climate change – Bulletin of …
- Your Weekly Recap: Finnish President Stubb visits Luxembourg, Claude …
- Climate crisis is a security issue, says UK foreign minister | …
- Climate Week NYC 2026: Global Commons Alliance on Climate Security, …
- Updated NATO Resilience Requirements Highlight Extreme Weather …
- U.S. Military Readiness: 25 Critical Aspects For A Changing