U.S. experts say American strikes on Iran may amount to war crimes

Dozens of international law experts in the U.S. have signed an open ‌letter saying that American strikes on Iran may amount to ​war crimes, after President Donald Trump reiterated his threats ⁠this week to strike Iran’s power and desalination plants.

Mr. Trump, who has previously offered shifting timelines and objectives for the war, said in a televised speech on ‌Wednesday (April 1, 2026) that the war could escalate if Iran did not give in to Washington’s terms, with strikes on its energy ‌and oil infrastructure possible.

Over 100 international law experts in the U.S., ‌including from ⁠schools like Harvard, Yale, Stanford, and the University ⁠of California, said in the letter released on Thursday (April 2) that the conduct of U.S. forces and statements by senior U.S. officials “raise serious concerns about violations of international human rights ​law and international humanitarian law, ‌including potential war crimes”.

The letter particularly noted a mid-March comment from Mr. Trump where he said the U.S. may conduct strikes on Iran “just for fun.” It also cited comments from Pentagon chief Pete Hegseth from ‌early March in which he said the U.S. does not ​fight with “stupid rules of engagement.”

The letter was published on the website of the Just Security policy journal. The experts ⁠said they were “seriously concerned about strikes that have hit schools, health facilities, and homes,” noting a strike on a school in Iran on the ‌war’s first day.

The U.S. military said in March it elevated the investigation into a devastating February 28 strike on an Iranian girls’ school after media reports revealed the probe showed U.S. forces were likely responsible. The Iranian Red Crescent says 175 were killed in the strike.

Mr. Trump on Wednesday (April 1) threatened to strike Iran “extremely hard.” “We are going to hit ‌them extremely hard over the next two to three weeks. We are going to ​bring them back to the Stone Ages, where they belong,” Mr. Trump said.

A leading U.S. Muslim advocacy group warned that Mr. ⁠Trump’s rhetoric during the war, including his threat to strike Iran “back to ⁠the Stone Ages,” has been “dehumanizing.” The war began on February 28 when the U.S. and Israel

attacked Iran. Tehran responded by ‌launching its own attacks on Israel and Gulf states with U.S. bases. Joint U.S.-Israeli strikes in Iran and Israeli attacks in Lebanon ​have killed thousands and displaced millions.