The COP30 climate talks have deadlocked over disputes concerning fossil fuels and financial aid, forcing negotiations to run through the night with no final agreement in sight.
The conference was scheduled to conclude by 6:00 PM local time on Friday, but with many delegates having already departed, the window to secure a deal is rapidly closing.
The host nation, Brazil, had pushed for an agreement that would outline a global transition away from fossil fuels.
However, a draft text released on Friday morning omitted any direct mention of phasing out coal, oil, and gas, the primary drivers of climate change.
This omission was deemed unacceptable by a bloc of nations that includes the UK.
Further complicating the negotiations, many poorer countries are demanding stronger financial commitments from wealthier nations to help them cope with the impacts of rising global temperatures.
A final plenary session has been scheduled for 10:00 AM local time to approve a number of less contentious issues.
Yet, there remains no sign of a breakthrough on the central points of conflict: the future of fossil fuels and the scale of financial support for developing nations.
Reaching a consensus is a fundamental challenge of the annual UN climate talks, as all countries present must agree to pass any deal.
Nations often have competing priorities shaped by their economic dependence on fossil fuels, their financial status, or their vulnerability to climate impacts.