WASHINGTON • President Joe Biden on Monday told leaders from the 18-member Pacific Islands Forum that he has heard their warnings about the impact of climate change on their region and that his administration is committed to helping them meet the challenge.

Pacific islands leaders gathered Monday for the start of a two-day Washington summit. Many have been critical of rich countries for not doing enough to control climate change despite being responsible for much of the problem, and for profiting from loans provided to vulnerable nations to mitigate the effects.

At the summit’s start, Biden said that his administration is requesting Congress approve $200 million in new assistance for the region, including financing to help the islands prepare for climate and natural hazards and improve infrastructure. Biden has put a premium on improving ties in the Pacific amid rising U.S. concern about China’s growing military and economic influence.

“I want you to know I hear you, the people in the United States and around the world hear you,” Biden told the leaders. “We hear your warnings of a rising sea and (that) they pose an existential threat to your nations. We hear your calls for reassurance that you never, never, never will lose your statehood, or membership of the U.N. as a result of a climate crisis. Today, the United States is making it clear that this is our position as well.”

As part of the summit, the U.S. is formally establishing diplomatic relations with two South Pacific nations, the Cook Islands and Niue. Later Monday, Secretary of State Antony Blinken will take part in signing ceremonies with Niue Premier Dalton Tagelagi and with Cook Islands Prime Minister Mark Brown to mark the new elevated relations.

Brown welcomed the elevation of U.S. relations with the Cook Islands and said the U.s.-pacific islands partnership could be an important tool for helping the region achieve its aspirations.

“These milestones celebrate areas of change, and demonstrate that with unshakable resolve and leadership, remarkable achievements are possible,” Brown said.

The forum includes Australia, the Cook Islands, Micronesia, Fiji, French Polynesia, Kiribati, Nauru, New Caledonia, New Zealand, Niue, Palau, Papua New Guinea, Republic of Marshall Islands, Samoa, Solomon Islands, Tonga, Tuvalu, and Vanuatu.

Kiribati is set to sign on to a $29.1 million partnership with the U.s.-backed Millennium Corporation Challenge. The group will assist the island country with dozens of low-lying atolls and 120,000 boost its workforce.

Some of the leaders attended an NFL game in Baltimore on Sunday and visited a U.S. Coast Guard cutter in the city’s harbor for a briefing on combating illegal fishing and other maritime issues. Biden announced Monday that later this year he would deploy a U.S. Coast Guard vessel to the region to collaborate and train with Pacific islands nations.

At last year’s summit, the White House unveiled its Pacific strategy, an outline of its plan to assist the region’s leaders on pressing issues like climate change, maritime security and protecting the region from overfishing. The administration pledged the U.S. would add $810 million in new aid for Pacific islands nations over the next decade, including $130 million on efforts to stymie the impacts of climate change.