Samoa is the first Pacific Island nation to host the event, and Prime Minister Fiamē Naomi Mata’afa said in a speech Friday that it was “a great opportunity for all to experience our lived reality, especially with climate change,” which was “the greatest threat to the survival and security of our Pacific people.”

Two dozen small island nations are among the Commonwealth grouping’s 56 member states, among them the world’s most imperiled by rising seas. Her remarks came as the United Nations released a stark new report warning that the world was on pace for significantly more warming than expected without immediate climate action.