Netanyahu used his UN address to deny genocide in Gaza and to single out New York's mayor as anti-semitic, escalating a fight between Israel's leader and an elected American official.

• Netanyahu rejected genocide accusations outright and told critics in the hall and in New York's city hall to be ashamed.
• He claimed Jews in New York feel less safe since Mamdani took office and tied him to people who defended the 9/11 attacks.
• Critics fired back that Israel depends on American aid, making an Israeli leader's attack on a US mayor especially galling.
• Netanyahu's own past comments resurfaced — he once said 9/11 was good for Israel because it would generate sympathy and benefit its standing with Washington.
• Iran's delegation skipped the speech, though a photo of Qassem Soleimani was left at their seats.

Outlook: Expect the Netanyahu–Mamdani clash to keep running, with US aid to Israel pulled further into New York politics.