NEW YORK — The Trump administration’s Board of Peace is seeking $2.45 billion from international donors to support a six-month recovery program in Gaza, officials said Wednesday at a high-level briefing at the United Nations. The plan covers 66 proposed projects involving infrastructure, education and other human-development programs, economic development, digital services, legal affairs, and peace and security. A presentation to participants estimated that Gaza’s longer-term needs could total as much as $71 billion. Steve Witkoff, the U.S. special envoy to the Middle East, described the effort as a difficult undertaking requiring sustained international cooperation. “There are no shortcuts,” Witkoff said, adding that the initiative had “no plan B.” The Board of Peace, chaired by President Donald Trump, was established to oversee postwar governance, reconstruction and peacebuilding initiatives. Donors would be able to route funding through the board and a newly planned fund for Palestinian projects. The proposed recovery work includes emergency repairs to water and sanitation systems, winter preparations, waste management and housing rehabilitation. It also outlines a transition toward a Palestinian administration responsible for consolidating public services, along with a phased security arrangement involving an international stabilization force and vetted Palestinian police. The broader effort is tied to Trump’s 20-point proposal to end the Israel-Hamas war. That plan has largely stalled over the question of Hamas’ disarmament and an Israeli military withdrawal. Hamas has said it would not disarm before an Israeli withdrawal, while Israeli Prime Minister Benjamin Netanyahu has rejected withdrawing before Hamas gives up its weapons. Aryeh Lightstone, a senior Board of Peace adviser, urged countries to propose new ways to support Gaza rather than rely on prewar approaches. He pointed to several offers already presented by participating governments: Kazakhstan has offered university placements for students who have been unable to study for three years; the United Arab Emirates has proposed developing an Emirati city; and Morocco has offered a field hospital and training for nurses and teachers. Bahrain, Lightstone said, has proposed an “e-gov in a box” program to help a Palestinian technocratic administration provide digital government services. The board has also developed a mechanism allowing countries that cannot directly finance troops to help support them through the World Bank, he said. A new fund for Palestinian education, culture, sports and other projects is expected to launch soon. Lightstone said the board would absorb the fund’s administrative costs so that donations could go directly to projects selected by contributors. Jared Kushner, former British Prime Minister Tony Blair and Board of Peace adviser Josh Gruenbaum attended the briefing. The scale of the proposed funding underscores the enormous challenge facing Gaza, where rebuilding basic services would depend not only on international financing but also on a durable political and security agreement.