Iran's military fired at least two missiles at commercial ships transiting the Strait of Hormuz on Monday night, two U.S. officials tell Axios. Why it matters: The reported attack took place after a one-week agreement between the U.S. and Iran on halting attacks in the strait expired. The resumption of Iranian attacks put the memorandum of understanding (MOU) that was signed less than three weeks ago at risk of unraveling. The U.S. is likely to retaliate with strikes against Iranian targets.