What to know as world leaders converge at the United Nations this week

World leaders are gathering at the United Nations in New York this week as Secretary-General António Guterres concludes his final high-level week before his term ends in December. President Trump will speak Tuesday following Brazilian President Lula da Silva, with Iranian President Masoud Pezeshkian, Ukrainian President Volodymyr Zelenskyy, and Israeli Prime Minister Benjamin Netanyahu scheduled to address the assembly, while Palestinian Authority President Mahmoud Abbas will deliver remarks via video after the U.S. denied his delegation visas.

Guterres plans to press world leaders on de-escalation in the Middle East, freedom of navigation through key waterways, and a ceasefire in Ukraine's five-year war. U.N. observers expect limited breakthroughs on these intractable disputes, though the high-level week runs through Sept. 28 with packed meetings among global officials.