BELEM, Brazil — As United Nations climate talks bubble to a critical point, negotiators on Tuesday were pressured to ensure that oil — along with fossil fuels coal and natural gas — won't be burned in the future.

Although the conference, known as COP30, is scheduled to run through Friday, the Brazilian presidency is pushing for an interconnected decision sooner on four issues that weren't originally on the agenda. Meanwhile, dozens of nations — rich and poor — banded together in a concerted call to deliver a detailed road map for the world to phase out or transition away from fossil fuels.

Former Ireland President Mary Robinson, a fierce climate advocate, was unusually optimistic Tuesday, comparing the talks in Belem, on the edge of the Amazon, to the climate talks that produced the land

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