Small-Share Emissions Arguments Face Scientific Pushback

In 2023, former UK prime minister Rishi Sunak argued that a national emissions share of less than 1 % made further domestic climate sacrifices “unfair.” Similar reasoning has been echoed by other leaders: Australia’s Scott Morrison cited a 1.3 % share in 2019; German chancellor Friedrich Merz pointed to Germany’s 2 % share while supporting loopholes in EU targets; Italy’s Giorgia Meloni referenced the EU’s 6 % contribution; and former UK prime minister Tony Blair used the UK’s 1 % share to call for abandoning clean-economy goals. The argument has been adopted by nationalist-populist parties across western Europe to justify weakening climate policy.

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Scientists stress that historical emissions, rather than current annual shares, drive long-term warming. European nations have emitted disproportionately per person and possess greater financial capacity to reduce pollution. The contention that small-share countries cannot influence extreme weather is described as “fallacious and simply buck-passing” by climate experts.

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The three most populous emitters—United States, China and India—each contributed more than 5 % of fossil-fuel CO2 in 2024. The remaining 194 nations each account for under 5 % individually, yet together they generate just under half of annual global emissions. An analysis by the Energy and Climate Intelligence Unit (ECIU) identified 200 newspaper instances in 27 countries where leaders invoked a sub-2 % share to oppose stronger climate action. A YouGov poll for the ECIU (April 2025) found that 25 % of Britons believe nations emitting less than 1 % should cease cutting emissions; the view was strongest among Reform UK supporters, half of whom held that opinion.

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Sunak’s 2023 remark framed low emissions as a justification for limiting domestic climate burdens. Merz asserted that even a fully climate-neutral Germany would not prevent any natural disaster worldwide. Reform UK leader Nigel Farage labeled it “absolutely mindless” for a sub-1 % emitter to “beggar itself.” The Times editorial (March 2025) echoed the sentiment that Britain’s 1 % contribution “can do little to stop” climate change. These statements have been used to argue against tightening national targets.

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Prof Piers Forster of the University of Leeds countered that future warming depends on future emissions, emphasizing that every avoided tonne improves temperature outcomes for generations. Dr Ella Gilbert, climate scientist and ECIU board member, highlighted the UK’s historical responsibility and urged the nation to lead by reducing its own emissions, noting that the climate “doesn’t care where carbon comes from.” Gilbert reiterated that achieving net-zero is the sole pathway to avoid dangerous tipping points.

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• “how can it be right that British citizens are now being told to sacrifice even more than others?” — Rishi Sunak, former UK prime minister.

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• “not a single natural disaster would be prevented anywhere in the world.” — Friedrich Merz, German chancellor.

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• “The party’s leader, Nigel Farage, said in an interview with the BBC last year that it was “absolutely mindless” for a country that produced less than 1% of global CO 2 to “beggar itself”.” — Nigel Farage, Reform UK leader.

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• “Future warming is driven by future emissions, so every tonne of carbon dioxide that a country or citizen can avoid emitting will improve temperature and heatwave outcomes for generations.” — Prof Piers Forster, University of Leeds.

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• “The climate doesn’t care where carbon comes from – whether [it’s] from multiple countries responsible for smaller proportions of emissions, or China.” — Dr Ella Gilbert, climate scientist, ECIU.

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Political leaders claim low current shares absolve their nations from aggressive mitigation, while scientific analysis stresses historical emissions and per-capita responsibility. The poll indicating public support for reduced ambition contrasts with expert consensus that all nations must act, revealing a gap between public perception and scientific guidance.

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Debates over national targets continue in parliamentary sessions across the UK, Germany, Italy and Australia. The ECIU’s findings suggest increased scrutiny of climate-skeptical rhetoric, while scientists call for leadership from historically high-emitting nations to meet net-zero objectives. The outcome of these discussions will shape the trajectory of climate mitigation efforts in the coming years.

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