KYIV, Ukraine — On the first day of the U.S.-Iran war, a Tomahawk cruise missile struck Shajareh Tayyebeh elementary school in Minab, southern Iran. At least 168 people were killed — more than 100 of them under the age of 12, according to UN and Iranian officials. The school building sat fewer than 100 yards from a long-time Islamic Revolutionary Guard Corps naval installation and was previously l...