High school students march for climate justice as Pacific leaders meet in Nuku'alofa, Tonga, Tuesday, Aug. 27, 2024. (AP Photo/Charlotte Graham-McLay)

United Nations Secretary-General Antonio Guterres speaks at the opening of the annual Pacific Islands Forum leaders meeting in Nuku'alofa, Tonga, Monday, Aug. 26, 2024. (AP Photo/Charlotte Graham-McLay)

High school students march for climate justice as Pacific leaders meet in Nuku'alofa, Tonga, Tuesday, Aug. 27, 2024. (AP Photo/Charlotte Graham-McLay)

FILE - A section of land between trees is washed away due to rising seas on Nov. 6, 2015, in Majuro Atoll, Marshall Islands. (AP Photo/Rob Griffith, File)

Vanuatu Prime Minister Charlot Salwai, from left, Niue Prime Minister Dalton Tagelagi and New Zealand Foreign Minister Winston Peters attend the opening of the annual Pacific Islands Forum leaders meeting in Nuku'alofa, Tonga, Monday, Aug. 26, 2024. (AP Photo/Charlotte Graham-McLay)

FILE - Tourists watch the sun set along a popular beach in Tamuning, Guam, May 6, 2019. (AP Photo/David Goldman, File)