Why America’s giant bunker-busting bombs may have failed to reach their target

A U.S. Air Force B-2 Spirit is prepared for operations ahead of “Operation Midnight Hammer” at Whiteman Air Force Base in Missouri, June 2025. 509th Bomb Wing/Digital

509th Bomb Wing/Digital

The infographics were everywhere in the run-up to Sunday’s early-morning strike on Iran’s nuclear facilities by American stealth bombers.

They depicted America’s bunker-busting bomb, known as the Massive Ordnance Penetrator, or GBU-57. It was being dropped from high above the Earth by a B-2 Spirit bomber. Then, the graphics showed it plowing a narrow channel deep beneath the ground — around 60 meters, or 200 feet — and erupting

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