In January this year, the British government quietly posted a fourteen-page document on a departmental website.
There was no press conference, no ministerial statement, no coordinated release. The timing amid the international furore over Trump’s Greenland sabre-rattling looked calculated to bury it.
The document was titled. It had been prepared for the Joint Intelligence Committee, the body that oversees MI5 and MI6, and had originally been presented at COBRA, the Cabinet’s crisis committee. Downing Street had suppressed it for months, reportedly because its findings were ‘too negative’.
It took a Freedom of Information request from a think-tank researcher to prise it loose.
The report’s central judgement, delivered with high analytical confidence, is stark: global ecosystem degradation and collapse threaten national security and prosperity. Every critical ecosystem is on a pathway to irreversible loss of function. The Amazon, the Congo basin, the boreal forests, the Himalayas, and note this the coral reefs and mangroves of Southeast Asia are singled out as particularly significant. The cascading risks include food insecurity, novel pandemics, mass displacement, geopolitical competition for shrinking resources, and widening opportunities for organised crime and non-state actors.
It is, in substance, an intelligence assessment that reframes ecological collapse as a systemic risk on par with hostile states, terrorism, and cyber threats.
One detail buried in the report deserves particular attention.
It notes that sustaining the world’s current consumption would take the resources of 1.6 Earths; for the United Kingdom alone, the figure is four (assuming everyone in the world has same standards). Australia’s per capita ecological footprint is among the highest in the world comparable to Britain’s and, on some measures, exceeding it. We are, on any honest accounting, among the most resource-intensive societies on the planet, drawing down ecological capital at a rate that would require several planets to sustain.
The British commentary was predictably insular. Newspapers asked what it meant for UK food imports and fertiliser dependency. Researchers at UEA and Exeter warned, reasonably enough, that securitising environmental policy could hand authority to defence and border agencies ill-equipped to manage ecological decline.
Nobody asked the more uncomfortable question:
What does this mean for countries that are not merely exposed to these risks at a distance, but are sitting directly on top of them?
Countries, for instance, like Australia.
Consider the numbers. The 2026 National Defence Strategy, released in April, commits Australia to $425 billion in capability spending over the coming decade. Defence funding will rise from $62.6 billion in 2026-27 to north of $100 billion by the mid-2030s, reaching three per cent of GDP. The Aukus submarine program alone carries a 30-year price tag of $268 to $368 billion, making it the largest defence acquisition in Australian history. The Department of Defence spends approximately $181.9 million every day.
Now consider the other side of the ledger.
According to the Biodiversity Council, on-ground biodiversity spending in the 2026-27 federal budget amounts to $496 million for the entire year. That is 0.06 per cent of total federal expenditure, or roughly what Defence burns through in two and a half days. An ANU study published in February found that the Australian government spends $26 billion annually on subsidies and tax concessions for activities that actively damage biodiversity fossil fuel extraction, large-scale mining, and intensive agriculture while directing just $649 million towards conservation.
For every dollar spent protecting nature, roughly 40 dollars are spent undermining it. Australia is not merely neglecting its environment. It is paying to degrade it.
The disproportion is breathtaking, and it becomes more so when you notice what it conceals. The JIC report is not written in the language of environmentalism. It is written in the analytical grammar of intelligence: confidence levels, structured uncertainty judgements, reasonable worst-case scenarios.
Australia’s 2026 National Defence Strategy speaks exactly the same language.
In April, when that grammar described Chinese military build-up and Indo-Pacific instability, Canberra responded with $425 billion and a decade-long spending plan. In January, when the same grammar from the same tier of institution described ecosystem collapse, the existing Australian response was 0.06 per cent of the budget. The machinery for reading this kind of warning exists. It produced a procurement schedule in weeks. There is an irony in building submarines to patrol the waters of the Indo-Pacific while the ecosystems above those submarines collapse. The threat is not at the perimeter. It is underneath the keel.
And it is not confined to the coast. The Great Barrier Reef 2,300 kilometres of the world’s largest living structure, home to more than 1,500 fish species and 1,200 coral species, supporting 60,000 jobs and $6.4 billion in annual economic activity has suffered six mass bleaching events since 2016. In July, marine ecologists at James Cook University warned that the next major disturbance could trigger localised species extinctions and widespread ecosystem collapse. The reef narrowly avoided UNESCO’s endangered listing this year, a reprieve that owed more to diplomatic lobbying than to ecological improvement.
The damage runs inland too. The Murray-Darling Basin the hydrological spine of Australian agriculture has lost 90 per cent of its native fish populations over the past 150 years. The Black Summer fires of 2019-20 burned through more than 17 million hectares and killed or displaced an estimated three billion animals. The 2021 State of the Environment Report found that at least 19 Australian ecosystems are showing signs of collapse or near-collapse, with 202 new species added to the threatened list between 2016 and 2021. This is not a distant projection. It is a country-wide audit, and the results are already in.
The UK report specifically identifies Southeast Asia’s coral reefs and mangroves as one of its six critical ecosystem regions. The Great Barrier Reef is not in Southeast Asia, but it is part of the same Indo-Pacific marine web, subject to the same warming trajectories, the same acidification chemistry, and the same cascading consequences. When the JIC warns that coral reef collapse would severely reduce fisheries yields, alter weather patterns, and release trapped carbon, it is describing a scenario in which Australia is not a distant observer but a front-line state more exposed, arguably, than Britain itself.
There is a natural resilience in ecosystems. Coral recruits recolonise bleached patches. Forests regenerate after fire. Fish stocks recover when pressure eases. But that resilience has a threshold, and what distinguishes ecological collapse from conventional security threats is what happens when the threshold is crossed. A submarine fleet can be expanded or contracted, an alliance renegotiated, a defence posture recalibrated. A collapsed ecosystem cannot be rebuilt. The reef does not grow back on command. The Murray-Darling does not refill itself on a procurement schedule. Every year of inaction closes off choices that no quantity of submarine steel can reopen.
With military threats, delay buys time. With irreversible ecological decline, delay destroys it. Defence planners understand this logic perfectly well it is why they build the fleet before the threat materialises, not after. The same logic, applied to the ecosystems that underwrite national prosperity, has not yet produced a single comparable commitment.
A functioning ecosystem is, in practical terms, a defence. The reef buffers cyclone damage to the Queensland coast. Mangroves attenuate storm surge. Forests regulate the water cycles that underpin agriculture. The Murray-Darling irrigates the food bowl. Remove any one of these, and the exposure is open-ended. Australia is building its military defences at record pace while allowing its natural ones to degrade at record pace. It is fortifying the perimeter and hollowing out the interior.
None of this is an argument against defence spending, or against Aukus.
The strategic environment in the Indo-Pacific is genuinely threatening, and the 2026 NDS is right that the international system is under greater strain than at any time since the Cold War.
The argument is about the undefended flank.
When the UK’s Joint Intelligence Committee, not Greenpeace, not the Greens, but the body that briefs the Prime Minister on threats to the realm produces an assessment placing ecosystem collapse alongside hostile states in the national security hierarchy, and when Australia sits astride the very ecosystems that assessment flags as critical, the continued allocation of 0.06 per cent of the federal budget to biodiversity is not prudence. It is a strategic vulnerability dressed up as fiscal discipline.
The British government tried to bury its own report because the findings were too alarming. Australia does not need to suppress such a report. It need only look out the window at the bleached reef, the drained basin, the burned forest. The threat is not coming. It is here. The question is whether Canberra will defend the flank before it collapses, or discover that the most expensive submarine fleet in Australian history was built to patrol a dead sea.
