- What timeline options were delegates debating?
- How did the timeline discussions unfold?
- What were the main points of disagreement?
- Why is the IPCC in a ‘serious funding crisis’?
- How have scientists reacted?
- What other issues remain unresolved?
- How are the IPCC AR7 reports progressing?
- How might the IPCC use AI and enhance gender inclusivity?
COP30 host Brazil has announced that world leaders will deliver their speeches on climate action several days before UN negotiations officially kick off on November 10, in a bid to ease pressure on hotels and transport in the medium-sized Amazon city of Belém.
For the past decade – since COP21 which adopted the Paris Agreement in 2015 – most heads of state and government have attended and spoken during the first two or three days of the UN climate conference. But this year, leaders will convene in Belém on November 6 and 7, before the November 10-21 talks.
“The [World Leaders’] Summit is part of the COP, and the decision to bring it forward was made by Brazil,” Valter Correia, extraordinary secretary for COP30, said in a statement. “This will give us time for more in-depth reflection, without the pressure from hotels or the city, and will help us better organise the event’s official opening.”
Climate campaigners gave the decision a mixed response, with some criticising the move and others arguing it would have little effect on the summit outcome.
Rich nations ignore polluting past to claim climate plans are 1.5C-compatible
Natalie Unterstell, president of Brazilian think-tank the Talanoa Institute, said bringing forward the two-day leaders’ summit may mean less media attention and opportunity to put pressure on negotiators.
“Splitting the World Leaders’ Summit from the actual negotiations is like having the opening act perform after the main show – it disrupts the flow and weakens the impact,” said Unterstell. “The risk is that leaders make grand statements in one room while negotiators, days or weeks later, water them down in another room.”
But Alden Meyer, senior associate with international think-tank E3G, said the change “makes sense” and still provides “political momentum around Brazil’s vision of a COP that cements a shift from negotiations to implementation and accelerates climate action on the ground”.
Meyer added that security has always been tight around the presence of world leaders at the UN climate conferences, so climate lobbyists would not lose access to them if their segment is held slightly earlier.
Since COP21 in Paris, the World Leaders’ Summit has been held at the beginning of the annual UN climate conference. At that key COP, which delivered a new global accord on tackling climate change, 150 heads of state arrived at the start to deliver speeches. At previous COPs, they had done so around the middle of the conference, usually with far fewer showing up.

Belém under pressure
This year, the annual UN climate summit will be hosted for the first time in the Amazon rainforest, in the northern city of Belém – largely seen as an emblematic location given the importance of forests in holding down planet-warming carbon emissions. Yet some officials have expressed concerns over whether the city of 1.3 million people is capable of hosting tens of thousands of delegates flocking in over two weeks.
In a letter issued on Monday setting out his vision, COP30 president André Aranha Corrêa Do Lago defended the decision made by Brazil’s President Luiz Inácio Lula da Silva to host the UN talks in the Amazon, arguing it will showcase the “extraordinary role” of rainforests in fighting climate change.
Just days before, at an informal UN plenary in New York, at least three country delegations expressed concerns over security and accessibility. Corrêa Do Lago responded by saying that, while Belém was “not designed for this kind of event”, its symbolism is more important than the challenges it poses.
Brazil’s COP30 president: Climate summits must move from words to real action
The Brazilian government has announced a plan to supply 26,000 new beds by utilising river cruise boats, rental apartments and even military facilities and schools.
Yet the massive construction efforts aimed at improving the city’s ability to host the summit smoothly have also been called in question.
This week, the BBC reported that a new 13-km highway cutting through the rainforest around Belém, seen as key for COP30 logistics, threatens protected land, as well as the homes and livelihoods of forest communities living along the route. The Brazilian government denied that the project is part of its infrastructure plans for the UN climate conference.
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Brazil decides leaders will speak before COP30, easing logistics crunch
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Climate Change
Paris Agreement committee names three countries snubbing it over NDCs
Three countries have been named by the Paris Agreement’s compliance committee for failing to submit a nationally determined contribution (NDC) and repeatedly snubbing offers of help with their climate plans.
After months of internal debate over whether to identify serial non-responders, the Paris Agreement’s Implementation and Compliance Committee (PAICC) named the three countries which have failed to engage with it over their NDCs on Friday.
It named Democratic Republic of Congo, Senegal and North Korea in a footnote of its annual report, adding that it decided to name them “with a view to facilitating engagement”, adding that representatives of the three nations had been invited to its meeting in early 2027 “with the purpose of identifying any challenges and constraints”.
“The Committee noted the importance of Parties engaging with the Committee in a timely manner, while noting that some delays may be due to the national capabilities and circumstances of the Parties”, the report said.
In July, PAICC said 12 countries had ignored its repeated attempts to discuss why they had not published an NDC as required every five years under the 2015 Paris accord.
Members of the committee had been divided over whether to name them, but at a September meeting decided to do so in their annual report to the annual climate COP summit.
By the time the report was published on Friday, only Congo, Senegal and North Korea “had not communicated an NDC or submitted a [Biennial Transparency Report] and had not yet responded to any of the Committee’s notifications, despite several reminders issued by the Committee in this regard”.
Rainforest and renewable energy ambitions
The silence from Congo and Senegal is notable because the former is home to much of the Congo Basin rainforest while the latter has sought billions of dollars in climate finance to support its renewable energy ambitions.
After Brazil, Congo has more rainforest than any country in the world. This forest, and the country’s peatlands, absorb huge amounts of greenhouse gas but are fast being lost to expanding farmland, charcoal production, logging and mining.
Senegal signed a Just Energy Transition Partnership with Canada and wealthy European nations in 2023, to help it meet its renewable energy targets under the-then government of Macky Sall. It was chair of the Least Developed Countries group between January 2022 and December 2023.

Tejas Rao, who is researching the PAICC as part of a doctoral thesis at Cambridge University, said the governments of the three countries should engage with the committee.
“Engagement costs these governments very little and the committee has shown it will listen,” he said.
“Silence leaves the committee with no basis to help, and it leaves the [governments] exposed to the narrative that they are simply disengaged,” he told Climate Home News.
Paris Agreement requirement
The 2015 Paris Agreement requires all parties to publish an NDC every five years outlining their emissions reduction targets, with each plan meant to be more ambitious than the country’s last NDC.
The latest set – the third round of plans, with new targets for 2035 – was due in February 2025. While most countries missed this deadline, all but around 30 – mostly small emitters but including Egypt, Vietnam and Argentina – have now submitted them.
Over the year, the PAICC – which is made up of government climate officials from developed and developing countries – has been communicating with governments that have not submitted NDCs and trying to overcome barriers to them doing so.
Some nations have cited exceptional circumstances as the reason for not submitting an NDC, a process that requires a significant amount of work in tracking emissions and consulting on how to curb them across the economy. For example, a letter from a Sudanese official to the PAICC, seen by Climate Home News, said that the country’s civil war had led to the suspension of its NDC preparation.
The US and Iran are not signed up to the Paris Agreement and so do not have active NDCs, nor does Taiwan, which is not a UN member state.
Rao said that because the PAICC is “facilitative and non-punitive”, naming the countries “is meant to open a door, not close one – the invited consultation is the point”.
“In recent months, governments that explained their constraints, whether capacity, finance or domestic process, have been met with follow-up and support rather than sanction, and the number of silent governments has fallen sharply,” Rao said.
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Paris Agreement committee names three countries snubbing it over NDCs
Climate Change
Q&A: Why a pivotal IPCC meeting in Ethiopia ended in ‘profound disappointment’
Countries have failed – for the sixth time running – to agree on the timeline for publishing the Intergovernmental Panel on Climate Change’s (IPCC) next set of influential reports.
The IPCC’s 65th session (IPCC-65) was seen by many to be the final opportunity for countries to agree on a schedule where its seventh assessment report (AR7) would be published in time for the UN’s second “global stocktake” of climate action.
Before last week’s meeting in Addis Ababa, Ethiopia, IPCC chair Prof Sir Jim Skea had warned that releasing the reports in time for the stocktake in 2028 would depend on a timelines being agreed by the end of 2026.
But the week-long meeting descended into fraught disagreements between governments, resulting in Skea “suspending” the talks on Friday evening with no decision made.
Countries were also unable to agree on the IPCC’s budget for the rest of the AR7 cycle, leaving the body with a “serious funding crisis”.
The IPCC has pledged to reconvene the meeting at the “earliest opportunity”; however, it has not yet given an indication of when this will be.
In his concluding remarks, Skea described the Addis Ababa summit as a “profound disappointment” and “among the most difficult IPCC meetings”, according to reporting from the Earth Negotiations Bulletin (ENB).
Some countries have reacted with dismay to the breakdown of negotiations, warning that a failure to have the IPCC’s latest assessments on climate adaptation and mitigation ready for the UN stocktaking exercise would undermine global climate action.
A climate envoy from a Pacific island state said it was a “travesty that a handful of countries continue to delay the IPCC’s reports – the science we need back home to help us save lives and livelihoods”.
Below, Carbon Brief explores the key developments, debates and disagreements at the IPCC meeting.


