Iran's most fortified nuclear facility, called Fordo, is buried deep inside a mountain. Only the U.S. has the 30,000-pound bombs — often referred to as "bunker busters" — capable of reaching it.
By
Kat Lonsdorf
In this photo released by the U.S. Air Force on May 2, 2023, airmen look at a GBU-57, or the Massive Ordnance Penetrator bomb, at Whiteman Air Base in Missouri.
As the escalated conflict between Israel and Iran enters its sixth day, the U.S appears to be increasingly weighing direct military involvement.
"I may do it. I may not do it," President Trump told reporters on Wednesday. "I mean, nobody knows what I'm going to do."
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