Wealthy countries pledged to provide $300 billion a year by 2035 to poorer countries to help them cope with the increasingly catastrophic impacts of the climate crisis — a figure many developing countries criticized as vastly insufficient.

BAKU, Azerbaijan — Negotiators from nearly 200 countries agreed early Sunday in a nonbinding commitment that wealthy nations would aim to provide at least $300 billion annually by 2035 to help poorer nations suffering the most from climate change.