Israeli Prime Minister Benjamin Netanyahu used his UN General Assembly speech to attack New York's mayor and deny genocide in Gaza, deepening Israel's isolation on the world stage.

• Netanyahu publicly threatened Mamdani before landing in the US, calling him antisemitic and accusing him of backing Hamas.
• Diplomats walked out of the hall as he began speaking, and Iran's delegation left a photo of slain commander Qassem Soleimani at their empty seats.
• He denied genocide in Gaza, defended Israeli soldiers, and attacked Qatar, Turkey, and Syria, while claiming Iran's nuclear program is destroyed.
• Protests filled New York streets, with actress Hannah Einbinder among those arrested.
• Palestinian president Mahmoud Abbas was denied a US visa and had to address the assembly by video.

Outlook: Israel looks set to stay diplomatically isolated while Washington keeps backing it, and the fight between Netanyahu and Mamdani is likely to escalate.