Climate talks in Baku ended with a mix of urgency and delay, progress and frustration. But finance deal could be a game-changer.

United Nations climate talks adopted a deal to inject at least $300 billion annually in humanity's fight against climate change, aimed at helping developing nations cope with the ravages of global warming in tense negotiations.

The COP29 climate deal, agreed to Saturday evening in Baku, Azerbaijan, provides vital insights into the future of global climate cooperation. Why it matters: The finance agreement pleased virtually no one but proved multilateralism is ailing but not dead.