It accuses the three countries of providing financial, military and tactical support to Hamas. The US government has designed Iran, Syria and North Korea state sponsors of terrorism. The plaintiffs in the case include US citizens injured on Oct 7, as well as relatives and the estates of victims killed in the attack. "Iran is the world's leading state sponsor of antisemitism and terror – along with Syria and North Korea, they must be held responsible for their roles in the largest antisemitic attack since the Holocaust," ADL Chief Executive Jonathan Greenblatt said in a statement. The Iran, North Korea and Syria missions to the United Nations in New York did not immediately respond to a request for comment.