Miliband: Climate Crisis Threatens National Security Worldwide 2026

Ed Miliband, the UK's foreign secretary, has warned that the climate crisis poses a direct threat to the national security of every country, as extreme weather events and economic shocks from fossil fuels become the norm rather than the exception. Speaking ahead of the Cop31 UN climate summit in Antalya, Turkey, Miliband said that security and defence objectives must become the new frontier of climate action.

In an interview with the Guardian, Miliband described how scenarios once confined to science fiction are now regular occurrences in daily news. He emphasized that climate breakdown drives food shortages, infrastructure threats, population movements, and conflict, making it one of the greatest national security challenges of our time.

Climate Breakdown as a National Security Threat

Miliband's warning comes as world leaders gather for the two-day leaders' summit segment of Cop31 on Wednesday and Thursday. He will tell the summit that the rapid heating of the planet will lead to widespread economic disruption, migration, and conflict, and that defence and security objectives must be integrated into climate policy.

"National security is the next frontier of the fight for climate action – the scenarios once of science fiction are now regular occurrences in the daily news," Miliband told the Guardian. He added: "We should be clear that climate breakdown is one of the greatest national security threats we face: food security, threats to infrastructure, and population movements [are resulting from the climate crisis]."

This framing represents a shift in how climate action is presented, moving beyond environmental concerns to core national security interests. By linking climate to security, Miliband aims to appeal to a broader audience, including those who prioritize defence and stability.

Political Context: A Veiled Swipe at Climate Sceptics

In a veiled swipe at the Conservatives and Reform UK, who want to scrap efforts to cut greenhouse gas emissions, Miliband said: "Those who seek to stick their heads in the sand on climate are putting our national security at risk." This comment underscores the growing political divide over climate policy in the UK and beyond.

The UK has positioned itself as a leader on climate action, but domestic politics remain contentious. Miliband's remarks are likely to intensify the debate over the costs and benefits of ambitious climate policies, especially as economic pressures mount.

Economic Shocks from Fossil Fuels: The New Normal

Miliband also highlighted that economic shocks from fossil fuels are now the norm rather than the exception. This refers to the volatility in energy prices and supply chains that have plagued global markets in recent years, exacerbated by geopolitical tensions and extreme weather events.

By framing fossil fuel dependence as an economic risk, Miliband reinforces the argument for a rapid transition to renewable energy. The UK has experienced firsthand the impacts of energy price spikes, which have contributed to inflation and cost-of-living challenges.

Implications for Global Security and Defence

The intersection of climate and security is increasingly recognized by military and intelligence agencies worldwide. Climate change is considered a "threat multiplier" that can exacerbate existing tensions and instability, particularly in regions vulnerable to drought, flooding, and other climate impacts.

Miliband's call to make security and defence objectives the new frontier of climate action suggests a more integrated approach to policymaking. This could involve greater investment in climate resilience for critical infrastructure, early warning systems for extreme weather, and international cooperation on climate-related migration.

What to Watch Next at Cop31

As the summit unfolds, eyes will be on how other leaders respond to Miliband's framing. The UK will likely push for stronger commitments on emissions reductions and adaptation finance, particularly for vulnerable countries.

The outcome of Cop31 will signal whether the international community is prepared to treat climate change as a security issue, with the urgency it demands. Miliband's intervention sets the stage for a more security-focused dialogue on climate action.

• Climate crisis as security threat: Miliband warns that climate breakdown endangers national security worldwide through food shortages, infrastructure risks, and migration.
• Security as new frontier: Defence and security objectives must be central to climate action, moving beyond traditional environmental framing.
• Political divide: Miliband criticizes those who "stick their heads in the sand" on climate, targeting Conservatives and Reform UK.
• Economic volatility: Fossil fuel shocks are now the norm, reinforcing the case for renewable energy transition.
• Cop31 focus: The summit in Turkey will test whether leaders embrace a security-driven approach to climate policy.

FAQ

The broader context of climate-related risks extends beyond security to trade and finance. As the UK navigates these challenges, it must also address vulnerabilities in its food supply chain, as highlighted in discussions about UK food imports at risk from climate-stressed countries. This interconnectedness means that national security is inseparable from global climate resilience.

Miliband's role as foreign secretary involves balancing multiple international agendas, including European relations and Middle East issues. His approach to climate as a security issue may influence his broader diplomatic engagements, such as those outlined in analyses of Ed Miliband's foreign secretary agenda on the EU, climate, and Gaza. By framing climate as a security threat, he positions the UK to lead on integrated policy responses.

The financial system also plays a critical role in addressing climate risks. Miliband has previously argued that the global financial system fails developing countries, a point relevant to climate adaptation funding. This perspective is detailed in coverage of Ed Miliband's critique of the global financial system's failure on developing countries. Without adequate financing, vulnerable nations cannot build resilience, exacerbating security threats.

Looking ahead, the success of Cop31 will depend on whether countries can deliver on ambitious climate goals. The biodiversity crisis is closely linked to climate security, and the question of whether nations can meet the global biodiversity deal's targets remains open, as explored in whether countries can deliver on the global biodiversity deal. Failure to address nature loss undermines food security and economic stability, compounding national security risks.

However, progress is threatened by political delays. Some countries are pushing to delay a vital global climate report, which could weaken the scientific basis for urgent action. This tactic is analyzed in why countries push to delay a vital global climate report. Such delays risk undermining the security-focused approach that Miliband advocates, as timely and accurate science is essential for effective policy.