Countries agreed on a deal to inject at least $300 billion annually in humanity's fight against climate change, aimed at helping poor nations cope with the ravages of global warming at tense United Nations climate talks in the city where industry first tapped oil.

United Nations climate negotiators agreed on a funding formula to help developing countries cope with the effects of climate change early Sunday in Azerbaijan after two weeks of intense negotiations.

Countries at the COP29 summit in Baku adopted a $300 billion global finance target to help poorer nations cope with the impacts of climate change, a deal roundly criticized by its intended recipients as woefully insufficient.