Analysis / paper

Climate disruption, not China, is the key security threat facing Australia

Why climate belongs at the centre of security

By David Spratt
Tuesday 16 June, 2026
Share

Australia’s security debate is increasingly shaped by military rivalry, yet accelerating climate disruption may pose the far greater long-term threat to national stability, safety and regional security.

Paper Summary

  • Climate disruption presents Australia’s greatest long-term security threat.
  • AUKUS risks over-prioritising military competition over systemic climate risks.
  • Climate impacts threaten food, water, infrastructure, health and regional stability.
  • Security spending should better reflect the scale and certainty of climate risks.
  • Australia needs a climate-first national security framework focused on resilience and prevention.

This submission argues that Australia’s security priorities are dangerously misaligned, with the AUKUS agreement and military preparedness focused on China while the far greater long-term threat — accelerating climate disruption — is being under-prioritised. It contends that climate change represents the most significant threat to Australians’ future safety, economic stability, food security, regional stability and national resilience. Drawing on global risk assessments, climate-security research and Australia’s own suppressed climate-security intelligence, the submission argues that worsening climate impacts, including extreme heat, food insecurity, displacement and regional instability, will create profound security risks across the Indo-Pacific. It calls for a reorientation of national security policy toward catastrophic risk assessment, regular climate-security analysis, stronger climate science capacity, and a comprehensive national security strategy grounded in the realities of climate disruption rather than military acquisition priorities alone.

System-level change and tipping points are happening faster than forecast, with a number of crucial climate system elements already passed tipping at the current level of warming. Risks are cascading, non-linear and underestimated; prudent risk management requires consideration of the bad-to-worst-case-scenarios.

David Spratt
Research Director and Climate Analyst
ClimateDisruption_Thumbnails&Feature.v1
paper

Climate disruption, not China, is the key security threat facing Australia

This submission argues climate disruption, not military rivalry, represents Australia’s greatest security risk, demanding a major rethink of AUKUS-era spending priorities.

More Analysis
Converging climate, fertiliser and food shocks threaten profound instability across Australia’s region.
A safe climate requires cutting emissions, removing excess carbon and investigating safe ways to cool the planet.
Climate disinformation threatens democracy, demanding urgent national response.