Months after an American airstrike hit Minab's Shajareh Tayyebeh school, families still gather to mourn the children and teachers killed. Their grief has deepened demands for a full account of the strike and turned the site into a memorial.

The Shajareh Tayyebeh school in the southern Iranian city of Minab has become a place to wrestle with grief and preserve the memories of some 120 children killed here by an American airstrike on the first day of the war...