Prospects of strong outcome appear dim but there is hope the talks will address pressing issue of climate finance

More than 100 heads of state and government are expected to land in Baku, the capital of Azerbaijan, over the next few days and the first thing they are likely to notice is the smell of oil. The odour hangs heavy in the air, evidence of the abundance of fossil fuels in this small country on the shores of the Caspian Sea.

Flaring from refineries lights up the night sky, and the city is dotted with diminutive “nodding donkey” oil wells raising and lowering their pistons as they draw from the earth. Even the national symbol is a gas flame, epitomised in the shape of three skyscrapers that tower over the city.