Governments, development banks and companies announced on Friday initiatives to mobilize billions in climate cash at the COP28 summit where the UAE has made increasing financing central to its leadership of the UN talks. So far the world has barely begun to deliver the vast amounts of money needed to help the world pay for the transition away from fossil fuels and deal with the impact of climate change. Developing countries will need an estimated $2.4 trillion in annual climate finance by 2030, the Climate Policy Initiative non-profit organization said.