To Strike a Climate Deal, Poor Nations Say They Need Trillions From Rich Ones

At a July global climate gathering in London, South African environment minister Barbara Creecy presented the world’s wealthiest countries with a bill: more than $750 billion annually to pay for poorer nations to shift away from fossil fuels and protect themselves from global warming.

The number was met with silence from U.S. Climate Envoy John Kerry, according to Zaheer Fakir, an adviser to Ms. Creecy. Other Western officials said they weren’t ready to discuss such a huge sum.

For decades, Western countries responsible for the bulk of greenhouse-gas emissions have pledged...