'Major polluters face mounting pressure': UN climate summit prevents complete collapse with eleventh-hour deal.

As dawn illuminated the Amazonian city of Belém on Saturday morning, delegates remained confined in a enclosed conference room, oblivious whether it was day or night. They had been 12 hours in tense discussions, with numerous ministers representing various coalitions of countries including the poorest nations to the most developed economies.

Patience wore thin, the air thick as sweaty delegates faced up to the sobering reality: they would not reach a comprehensive agreement in Brazil. The latest global climate summit hovered near the brink of abject failure.

The major obstacle: Fossil fuels

As science has told us for well over a century, the carbon dioxide produced by burning fossil fuels is heating up our planet to dangerous levels.

However, during more than three decades of regular climate meetings, the essential necessity to halt fossil fuel use has been addressed only once – in a agreement made two years ago at the Dubai climate summit to "shift from fossil fuels". Delegates from the Gulf states, Russia, and several other countries were resolved this would not happen again.

Growing momentum for change

Simultaneously, a growing number of countries were similarly resolved that advancement on this issue was vitally needed. They had formulated a proposal that was attracting increasing support and made it clear they were willing to stand their ground.

Less wealthy nations desperately wanted to make progress on securing funding support to help them address the growing impacts of environmental crises.

Critical moment

During the night of Saturday, some delegates were prepared to walk out and trigger failure. "The situation was precarious for us," commented one national delegate. "I was ready to walk away."

The pivotal moment occurred through negotiations with Saudi Arabia. Around 6am, senior representatives separated from the main group to hold a confidential discussion with the head Saudi negotiator. They encouraged wording that would subtly reference the global commitment to "move beyond fossil fuels" made two years earlier in Dubai.

Surprising consensus

Rather than explicitly namechecking fossil fuels, the text would refer to "the Dubai agreement". Following reflection, the Saudi delegation surprisingly approved the wording.

Participants expressed relief. Applause rang out. The deal was finalized.

With what became known as the "Amazon accord", the world took a modest advance towards the gradual elimination of fossil fuels – a uncertain, inadequate step that will barely interrupt the climate's continued progression towards catastrophe. But nevertheless a notable change from complete stagnation.

Major components of the agreement

• In addition to the subtle acknowledgment in the legally agreed text, countries will start developing a roadmap to gradually eliminate fossil fuels
• This will be mostly a non-binding program led by Brazil that will report back next year
• Addressing the required reductions in greenhouse gas emissions to not exceed the 1.5C limit was similarly postponed to next year
• Developing countries secured a threefold increase to $120bn of annual finance to help them manage the impacts of extreme weather
• This sum will not be delivered in full until 2035
• Workers will benefit from a "fair adjustment program" to help people working in fossil fuel sectors move toward the renewable industry

Mixed reactions

With global conditions hovers near the brink of climate "critical thresholds" that could destroy ecosystems and throw whole regions into chaos, the agreement was far from the "major breakthrough" needed.

"Cop30 gave us some baby steps in the correct path, but in light of the severity of the climate crisis, it has fallen short of the occasion," stated one policy director.

This imperfect deal might have been all that was possible, given the political challenges – including a US president who shunned the talks and remains aligned with oil and coal, the rising tide of nationalist politics, continuing wars in multiple regions, unacceptable degrees of inequality, and global economic volatility.

"The climate arsonists – the oil and gas companies – were ultimately in the crosshairs at Cop30," says one policy convener. "We have crossed a threshold on that. The platform is available. Now we must convert it to a real fire escape to a protected environment."

Major disagreements revealed

Although nations were able to applaud the gavelling through of the deal, Cop30 also revealed deep fissures in the only global process for confronting the climate crisis.

"International summits are consensus-based, and in a period of global disagreements, consensus is ever harder to reach," commented one global leader. "It would be dishonest to claim that Cop30 has provided all that is needed. The gap between where we are and what research requires remains alarmingly large."

When the world is to avert the most severe impacts of climate collapse, the UN climate talks alone will fall far short.