Azerbaijan hosts the UN’s 29th climate Conference of the Parties (COP29), from 11 to 22 November, at a critical moment for multilateral efforts to address climate change. Climate impacts are worsening, yet action is inadequate to the scale of the crisis. Most urgently, vastly more money – in the trillions of dollars – must be mobilized to support developing countries’ climate responses. Delivering an agreement on increased climate financing is the key task for COP29, and for Azerbaijan in guiding the summit’s negotiations.