A US strike that hit a two-story building in Iran killed 123 children, and the reason appears to be intelligence maps that were nearly a decade old.

• The building was flagged as a target using satellite imagery from years earlier, before it had been turned into a school.
• Images from eight years ago already showed a soccer field and brightly painted walls — signs it was a school.
• The US has not publicly taken responsibility; Trump has blamed Iran for the deaths.
• More than 1,000 targets were struck in the first 24 hours of the war, many with Tomahawk cruise missiles.
• Over 850 Tomahawks have been fired in four weeks, and the Pentagon is worried about running low on them.

Outlook: Expect pressure on the US to explain the targeting failure, and growing concern inside the military about how fast its missile stockpile is draining.