Netanyahu used his UN speech in New York to insult Mayor Zohran Mamdani and claim to speak for Jewish Americans — a claim polling does not support.

• Netanyahu called delegates who walked out of his speech "moral cowards."
• He then went after Mamdani, saying he represents New York's Jewish residents.
• Polling shows Mamdani is far more popular with Jewish Americans than Netanyahu, by a wide margin on both favorability and net rating.
• A large majority of Jewish Americans oppose the Netanyahu government.
• American media rarely cites those numbers, letting the claim go unchallenged.

Outlook: Expect Netanyahu to keep invoking Jewish Americans as political cover, and expect sharper pushback from Mamdani's camp in New York.