America's Biggest Bomb Gets Another Upgrade To Target Iran

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The 30,000-pound Massive Ordnance Penetrator (MOP) is the largest bomb in the U.S. arsenal, and its new design is tailored specifically for striking Iran's Fordow nuclear enrichment complex.

Fordow, buried about 300 feet beneath a mountain near the city of Qom, is believed to contain more than 2,700 centrifuges enriching uranium.

Adam Entous and Julian Barnes at The Wall Street Journal (WSJ) report that not only has the MOP been refined for an Iranian strike, but it's also being used to assure Israel the U.S. can keep Tehran from acquiring a nuclear bomb.