The president of the Cop28 climate talks has blamed rich nations’ “dismal” failure to provide $100 billion a year in climate finance to developing countries for “holding up” progress in negotiations. The UAE’s climate envoy Sultan Al Jaber has requested donor countries to provide a definitive assessment on the overdue delivery of the commitment before the climate summit in Dubai at the end of November. “Expectations are very high. Trust is very low,” he told attendees of the Petersberg Climate Dialogues in Berlin.