Nations at COP28 in Dubai approved earlier on Wednesday a roadmap for “transitioning away from fossil fuels” – a first for a UN climate conference – but the deal still stopped short of a long-demanded call for a “phaseout” of oil, coal and gas.

Reacting to the adoption of the outcome document, UN chief António Guterres said that mention of the world’s leading contributor to climate change comes after many years in which the discussion of this issue was blocked.

He stressed that the era of fossil fuels must end with justice and equity.

“To those who opposed a clear reference to a phaseout of fossil fuels in the COP28 text, I want to say that a fossil fuel phase out is inevitable whether they like it or not. Let’s hope it doesn’t come too late,” added the Secretary-General.

The latest edition of the annual UN climate conference has been running in Dubai, the largest city in the United Arab Emirates, since 30 November.

COP28 had been scheduled to close on Tuesday, but intense overnight negotiations on whether the outcome would include a call to “phase down” or “phase out” planet heating fossil fuels like oil, gas and coal forced the conference into overtime.

This is the main sticking point that pit activists and climate-vulnerable countries against some larger nations for much of past two weeks.

In his statement, Mr. Guterres said limiting global heating to 1.5°C, one of the keystone targets set in the landmark 2015 the Paris Agreement, “will be impossible without the phase out of all fossil fuels”, and this is being recognized by a growing and diverse coalition of countries.

The negotiators at COP28 also agreed on commitments to triple renewables capacity and double energy efficiency by 2030 and made progress in relation to adaptation and finance.

Other progress was also made in relation to adaptation and finance, including – including the operationalization of the Loss and Damage Fund, even though financial commitments are very limited, according to the Secretary-General.

But the UN chief stressed that much more is needed to deliver climate justice to those on the frontlines of the crisis.