IPCC deadlock: why the next climate assessment may arrive too late

Members of the Intergovernmental Panel on Climate Change have spent nearly three years trying to agree on a timeline for publishing their next review of climate science. They still have not. The decision, according to reporting dated 9 October 2026, was expected to take minutes.

The deadlock matters because the IPCC's assessments are the scientific foundation for UN climate negotiations and national policy. A delayed assessment delays the shared evidence base those decisions rest on.

The timeline dispute is not the panel's only problem. A Guardian investigation published on 21 September 2026 found fossil fuel industry links among IPCC authors, including Mustafa Babiker, who works with Saudi Aramco. Experts quoted in that investigation described the body's conflict of interest policy as "not fit for purpose."

What is clear is the panel's own chair, Jim Skea, has said the central conclusion of IPCC reports is that surpassing 1.5C of warming is almost inevitable within the next few years.

That combination — a chair describing 1.5C as nearly out of reach, a membership unable to schedule its next report, and an author roster facing credibility questions — puts the panel in an uncomfortable position. Its assessments are meant to be the neutral ground where governments meet the science. If the timeline stays blocked, the next assessment may arrive later than the policy decisions it is supposed to inform. If the conflict of interest questions stay unresolved, its authority may be contested regardless of when it publishes.

Those are the questions that will determine whether this is a procedural delay or something more consequential.

- https://www.internazionale.it/ultime-notizie-reuters/2026/10/09/inside-the-deadlock-at-the-world-s-top-climate-science-body - https://www.theguardian.com/environment/2026/sep/21/saudi-arabia-aramco-oil-scientists-ipcc-climate-reports - https://www.eureporter.co/environment/climate-change/2026/04/28/glaciers-melting-risks-rising-ipcc-chair-on-central-asias-climate-future/