The United States has used a new bunker-buster deep penetration bomb for the first time, it said, announcing a strike against Iranian missile sites that threaten international shipping in the Strait of Hormuz.

U.S. Central Command (CENTCOM) stated overnight that strikes against “hardened Iranian missile sites” had “successfully employed” multiple 5,000 pound “deep penetrator munitions”. It was separately confirmed these were GBU-72s, a modernised guided bomb designed to penetrate through several yards of reinforced concrete before exploding, to take out hardened bunkers and shelters.

Exactly how deep underground the new bomb can be effective…

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