Not news: Israeli delegation walks out of United Nations General Assembly during Iranian President Mahmoud Ahmadinejad’s inflammatory remarks.

News: U.S. delegation doesn’t join them.

The U.S. representatives at the UN remained in their seats on Monday — a change in past protocol when Iran verbally attacks Israel directly.

According to the AP, the American delegation listened intently as Ahmadinejad attacked the “fake regime” of Israel and accused the United States of failing to protect freedoms of speech and religion.

Iran’s president called Israel a nuclear-armed “fake regime” shielded by the United States, prompting Israel’s U.N. ambassador to walk out of a high-level U.N. meeting Monday promoting the rule of law.

Iranian President Mahmoud Ahmadinejad also accused the U.S. and others of misusing freedom of speech and failing to speak out against the defamation of people’s beliefs and “divine prophets,” an apparent reference to the recently circulated amateur video made in the U.S. which attacks Islam and denigrates the Prophet Muhammad.

The Iranian leader, who has called for Israel’s destruction, used his speech to denounce Israel’s occupation of Palestinian territory and U.S. vetoes in the U.N. Security Council to back its ally. He urged all nations to “hold occupiers accountable and make efforts to return the occupied territories to their rightful owners.”

Ahmadinejad blamed the “discriminatory” veto power of the U.S., China, Russia, Britain and France for the Security Council’s failure to ensure peace in the world, and he called for a change in the rules “in favor of nations with due regard to justice.”

This after President Obama turned down a meeting with Israeli PM Benjamin Netanyahu?  The Obama administration seems to be sending a crystal-clear message to Israel: You’re on your own.