As Donald J. Trump returns to the political forefront as President-elect, his administration may significantly reshape the United Nations. From potential cuts in US funding and support for the World Health Organization to a pro-Israel stance and a departure from global climate agreements, Trump 2.0 could lead to profound changes in how the UN operates. Analysts are cautious about America’s role and funding, as well as the implications of a diminished US presence, particularly regarding China’s rising influence in international affairs.