A group of conflict-affected countries is pushing at COP29 to double financial aid to more than $20 billion a year to combat the natural disaster and security crises facing their populations, a letter seen by Reuters showed.

Developing countries need at least $1 trillion per year by the end of the decade to cope with climate change, economists told U.N. talks in Baku, where early efforts to reach a finance deal risk being overshadowed by diplomatic rows.

"You owe us!" screamed a protest banner at the COP29 summit in Azerbaijan, where negotiations over how much rich nations most responsible for climate change should pay poorer ones are