COP29 chief secretly filmed promoting fossil fuel deals

Watch: Secret footage shows COP29's chief Elnur Soltanov discussing gas and oil deals

Oil and gas accounts for about half of Azerbaijan's total economy and more than 90% of its exports, according to US figures.

this is the second year in a row the BBC has revealed alleged wrongdoing by the host government.

These events are supposed to be about reducing the world's use of fossil fuels – the main driver of climate change – not selling more.