President Donald Trump is expected to criticize the United Nations when he addresses the General Assembly in New York on Tuesday, with U.S. Ambassador to the U.N. Mike Waltz pointing to recent allegations involving American military operations in Iran.

Waltz said in an interview that Trump is expected to challenge the U.N. Human Rights Council over a report alleging that U.S. service members may have committed war crimes in Iran.

“The Human Rights Council, which is a separate part of the U.N. in Geneva, but still part of it ... years ago had a George Floyd commission, and then just released a report ... saying that US service members may have allegedly engaged in war crimes in Iran,” Waltz said.

Waltz argued that any civilian casualties resulting from U.S. military operations would be unintended and incidental to combat, while contrasting them with the Iranian government's actions.

“We have to remind people that, even when we have civilian casualties ... it's unintentional and it's incidental as part of a conflict,” Waltz said, adding that the U.N. should not make what he called a “ridiculous moral equivalence.”

Waltz said Trump is also expected to discuss U.S. sovereignty, international courts such as the International Criminal Court, and the administration's “America First” approach to the U.N. He said Trump wants the organization to focus more heavily on diplomacy and resolving conflicts around the world.

The U.N. Security Council is expected to discuss the war in Ukraine and artificial intelligence, while Trump is scheduled to meet with Ukrainian President Volodymyr Zelenskyy. The administration is also pursuing diplomatic efforts related to Iran, which has disrupted shipping through the Strait of Hormuz and contributed to higher global energy prices.