Amid tensions in the West over cuts to development funding and souring US relationships with its allies, Brazil’s COP30 president, André Aranha Corrêa do Lago, defended multilateralism and the legacy of UN climate talks in his first address as chief of this year’s climate summit.

On Wednesday, Corrêa do Lago told a plenary meeting at UN headquarters in New York he hopes Brazil can provide a “decisive impulse” in protecting the “institutional legacy we built together over three decades”, as well as accelerating implementation of the Paris Agreement to tackle climate change.

“Brazil has the firm conviction that there is no future progress for humanity without deep, rapid and sustained cooperation among all countries,” said the veteran Brazilian diplomat, who also highlighted the outcomes of the previous two COPs.

His comments hold significance as climate-change sceptic US President Donald Trump has kick-started the process to pull the US out of the global climate accord it adopted in 2015, backed the expansion of fossil fuel production on American soil, and refused to deliver promised climate finance.

On Thursday, the EU’s climate information service Copernicus said February 2025 was the third-warmest February globally, with the average temperature reaching 1.59 degrees Celsius above pre-industrial times, and the extent of sea ice in both polar regions falling to a new all-time minimum last month.

What was decided at the COP29 climate summit in Baku?

But despite Corrêa do Lago’s appeal for international unity in New York, longstanding grievances on climate aid emerged as countries outlined their negotiating positions. In a statement read by Iraq, the G77 group representing all developing countries called on wealthy nations to deliver more funding.

“The developing countries’ expectations were not met (at COP29),” Iraqi ambassador Abbas Kadhim Obaid told the UN plenary. “COP29 failed to deliver the crucial support essential for developing countries to achieve a just transition towards low-carbon development pathways, or to prepare and adapt to the devastating impact of climate change.”

At last year’s COP29 in Azerbaijan, rich nations agreed to channel at least $300 billion a year by 2035 to ramp up climate action in vulnerable countries as part of a new finance goal, after bad-tempered talks whose outcome was criticised as inadequate by developing states and activists alike.

Speaking during a trip to Nigeria on Thursday, Simon Stiell, the head of UN Climate Change, emphasised that Brazil, as COP30 host, “is focused on ensuring that we find ways to increase global climate finance for the developing world now and out to 2035”.  

“And we’re working with them to make this happen. Even in the face of real political headwinds,” he said.

A strong national climate plan can supercharge #Nigeria's thriving economy, driving jobs and progress right across the #SDGs, fueled by affordable clean energy.

Nature-based solutions like mangrove restoration further boost resilience and pay for themselves many times over. pic.twitter.com/DZTKF541AZ

— Simon Stiell (@simonstiell) March 6, 2025

He noted in a speech that the international community should enable Nigeria and countries like it to access more finance from international climate funds, sooner.  

Under a new, strong national climate plan for Nigeria, investing in renewable energy, green buildings and infrastructure, domestic manufacturing, sustainable agriculture and clean cooking would all help boost the economy and protect people’s health, Stiell said.

But, he added, “of course, this isn’t possible without finance… And it would be unfair to expect Nigeria to act alone.”

Pressure for more private finance

At the UN this week, however, the rift between rich and poor countries over who should provide climate funding was on show yet again, with Australia and the European Union downplaying the role of governments and instead calling for a bigger contribution from private finance.

“Let’s be honest. The needs for climate-related investment are so vast that they can never be met solely by the provision of public finance and mobilisation of finance through public interventions. A strong enabling environment for investment is not optional – it’s essential,” said the EU’s representative.

In November, countries will gather in the city of Belém, in Brazil’s Amazon region, to finalise a roadmap intended to help mobilise a larger sum of $1.3 trillion a year by 2035 from all available sources. Governments are also expected to unveil their new nationally determined contributions (NDCs) by September, outlining targets and plans to cut planet-heating emissions by the same year.

Fossil-fuel transition pledge

At COP28 in Dubai, countries reached a landmark decision to transition away from fossil fuels in energy systems, based on the first Global Stocktake (GST) of climate policies under the Paris pact. Corrêa do Lago highlighted this decision as one of the main outcomes from past climate negotiations.

But there has since been little reaffirmation of that pledge nor any concrete indication of how countries will put it into practice. References to it were removed from both a COP16 biodiversity deal in Cali last year and final decisions at COP29 in Baku, after Saudi Arabia said it would not accept text that mentioned fossil fuels. The climate summit ended with no outcome on stepping up emissions cuts.

This week’s UN meeting heard renewed calls for greater ambition at COP30. “The world expects real progress on transitioning away from fossil fuels at COP30,” the EU’s delegate said. “We simply cannot afford to have two COPs without an outcome on mitigation.”

A group of demonstrators at COP29 in Baku, Azerbaijan, demand negotiators to speed up the transition away from fossil fuels.
A group of demonstrators at COP29 in Baku, Azerbaijan, demand negotiators to speed up the transition away from fossil fuels. (Photo: UNFCCC/Flickr)

COP30 President Corrêa do Lago did not explicitly call out fossil fuels, but did mention that the Global Stocktake – the process that led to the COP28 fossil fuel transition pledge – is “the unanimous reference that informs international cooperation”, adding “the GST stands as our guide to Mission 1.5”.

Brazil’s leadership on climate action has been questioned as President Lula da Silva has made a strong push to begin oil drilling in the mouth of the Ama


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