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... Years before the US attacked Iran at the end of February, an intelligence analyst examining information about potential future strike targets in Iran noticed changes at a site the US had previously characterized as a naval facility belonging to the elite wing of the Iranian military in Minab city in the southeast of the country. It was, in fact, now an elementary school.

The analyst remarked on changes at the site in a digital intelligence tool, but that tool wasn't linked up to the official intelligence database that the US uses to develop strike targets and the information was never conveyed to military commanders, according to people familiar with the matter who declined to be named discussing sensitive matters.

On Feb. 28 when President Donald Trump announced the start of major combat operations against Iran, a missile struck the school. The attack killed an estimated 120 children, and nearly 200 people in all, representing the worst incident of civilian harm resulting from US operations in decades.

The analyst's remarks, which one of the people familiar with the matter said were submitted in 2019, were never heeded, and the same building was reviewed multiple more times over the following years without anyone updating the targeting database. ...